High-film filters – When depth filtration meets Italian engineering

If you want crystal-clear water (not just "clean enough," but "diamond-clear"). If you want to backflush less frequently (every 4 weeks instead of every week). If you want to invest in longevity (20+ years instead of 5-10 years).

They have a sand filter. Standard model (plastic, 500mm diameter, 400mm filter height). The problem:

Problem #1: Filter bed too shallow
Standard filters have a filter height of 400-500 mm (shallow bed). Dirt is only filtered superficially (the top 10-15 cm of sand do its work, the bottom 25-30 cm do nothing). The result: the filter clogs quickly (the top layer is full) → you have to backwash every week (annoying, wastes water).

Problem #2: Poor water quality
A shallow filter means coarse filtration (only large particles are trapped; small particles pass through). The result: the water is "clean" (no leaves), but not crystal clear (slightly milky; you can't see the bottom sharply at a depth of 2 meters). Crystal-clear purists are dissatisfied .

Problem #3: Short standby time
Standard filters clog quickly (shallow bed fills up) → pressure rises (pressure gauge shows 1.5 bar instead of 0.8 bar) → backwashing is necessary (every week). This wastes: water (500-1,000 liters per backwash), time (20 minutes of work), and chemicals (water is diluted → pH value fluctuates → readjustment required).

Problem #4: Cheap material ages
Standard filter: Plastic (PE, PP – not UV-resistant) → becomes brittle after 5-10 years (sun destroys material) → cracks develop → filter leaks → replacement necessary (€300-€800).

There is a solution. One that solves all four problems at once – for the next 20 years.

The deepbed filter – a depth filter made of fiberglass-reinforced, yellow-coated polyester . Made in Italy. The special feature: 50% deeper filter bed (up to 950mm filter height instead of 400mm) → dirt is distributed over the entire depth (not just at the top) → filter clogs 3-4 times slower → you backwash every 4 weeks (instead of every week) → water is crystal clear (diamond quality).

What you will receive:

• Depth filtration (high-bed principle) – 50% deeper filter bed = dirt is distributed evenly over the entire depth
• Backwash every 4 weeks (instead of every week – saves 75% water + time)
• Crystal-clear water quality – the finest particles are trapped (you can see the bottom clearly at a depth of 3m)
• Fiberglass reinforced polyester + gelcoat – UV-resistant, chemical-resistant, 20+ year lifespan
• Transparent lid – you can see the filter bed (inspection without opening)
• 6-way valve – all operating modes (filter, backwash, rinse, drain, circulate, closed)
• 3 sizes – for pools 80-180 m³ (Ø 650mm, Ø 800mm, Ø 950mm)
• Made in Italy – professional manufacturing, not cheap goods
• Working pressure 2.5 bar – robust, safe, durable

The result: You only need to backwash every 4 weeks (instead of every week) = 75% less work + 75% less water waste (36,000 liters/year saved with 12 backwashes instead of 48). Plus: The water is crystal clear (not "clean enough", but "diamond clear").

Saturday, 10:00 AM. Standard filter: Pressure gauge reads 1.5 bar (pressure increased, filter bed clogged) → You must backwash (valve on "Backwash", pump on, wait 5 minutes, 1,000 liters of water wasted). High-bed filter: Pressure gauge reads 0.9 bar (normal pressure, filter bed working evenly) → You can continue swimming (no backwashing necessary – filter will run for another 3 weeks).

The 5 most important advantages at a glance:

• Depth filtration = 3-4x longer service life : 50% deeper filter bed (650-950mm height instead of 400mm), dirt is distributed over the entire depth (not just the top 10 cm), filter clogs 3-4x slower, backwashing every 4 weeks (instead of every week = 75% less work)
• Crystal-Clear water quality = diamond clarity : The finest particles are trapped (even 10-20 microns – the smallest suspended solids), the water is not just "clean" but "crystal clear", you can see the bottom sharply at a depth of 3m (like freshly cleaned glasses), Crystal-Clear purists are happy
• Fiberglass reinforced polyester + gelcoat = 20+ year lifespan : GRP reinforcement (like boat hulls – extremely robust), gelcoat outer coating (UV-resistant, chemical-resistant), no yellowing, no embrittlement, no aging (sun/chlorine do not damage the material), 20+ years of use (standard filters: 5-10 years)
• Transparent lid = visual inspection without opening : You can see the filter bed (sand level, degree of contamination) without opening the filter, know exactly when backwashing is necessary (no guessing – see), save time (no unnecessary opening/closing)
• 3 sizes for pools 80-180 m³ = perfect scaling : Ø 650mm (up to 80 m³, small pools), Ø 800mm (up to 140 m³, family pools), Ø 950mm (up to 180 m³, large pools), each size optimally dimensioned (not oversized, not undersized)

For whom is this high-efficiency filter ideally suited?

Reality check : The high-layer filter is for Crystal Clear purists and maintenance haters who want the best water quality and infrequent backwashing – and are willing to invest in premium quality (more expensive than standard filters, but pays for itself through longevity and water savings).

✓ "Crystal Clear Purists" – people for whom water quality is binary
You're a perfectionist. Water quality is binary for you: either it's "diamond clear" (you can see every grain of sand at a depth of 3 meters) or it's dirty. Slight turbidity is unbearable. Standard filter: water is "okay" (no leaves, but slightly milky – 20-50 micron particles float through). High-performance filter: water is crystal clear (even 10-20 micron particles are trapped – the finest suspended solids). You're happy.

✓ People who hate backflushing (waste of time + waste of water)
Backwashing is a pain. Every week: go to the equipment room, turn the valve to "Backwash," start the pump, wait 5 minutes, turn the valve to "Rinse," wait another 2 minutes, then turn the valve back to "Filter." 20 minutes of work. 1,000 liters of water wasted. At 48 times a year: 16 hours of work + 48,000 liters of water wasted. With a high-layer filter: backwashing every 4 weeks (12 times a year) = 4 hours of work + 12,000 liters of water = 75% saved .

✓ People with variable filter pumps (Flotide, Inverter) – which filter 24/7
They have an inverter pump (runs 24 hours at low speed – slow continuous filtration). The problem with standard filters: the shallow filter bed still clogs quickly (because continuous filtration = a lot of dirt over time). High-bed filters: deep filter bed = dirt is distributed → filter clogs much more slowly → perfect for 24/7 filtration .

✓ People with large pools (60+ m³) – who need high flow rates
Your pool is 10 x 5m (50 m³) or larger. You need: a flow rate of 25-35 m³/h (for two circulations per day). Standard filter (Ø 500mm): Too small → filter speed >60 m/h (too fast – water rushes through, filtration is poor). High-bed filter Ø 800mm: 25 m³/h at a filter speed <50 m/h (optimal – water flows slowly through the filter bed = better filtration).

✓ People with heat pumps/solar panels – optimizing the overall system
Your pool is heated (heat pump €3,000, solar heating €2,000). You want: The system to run efficiently (lower filter velocity = heat pump works better). High-profile filter (larger filter surface) → lower filter velocity → heat pump/solar works more efficiently (less pressure loss = less pump load).

✓ People with saltwater pools – who need corrosion-free material
Your pool uses salt electrolysis (5-10 g/L salt). A problem with standard filters is that the plastic ages faster (salt attacks the material). High-layer filters (GRP + gelcoat) are corrosion-free (salt/chlorine do not damage the material) → same lifespan as freshwater pools.

✓ People who want to make a real investment once (20+ years of use)
They hate the saying "buy cheap, buy twice." Standard filters (€300-€600): Last 5-10 years → need to be replaced 2-4 times (over 20 years) = €1,200-€2,400 total . High-performance filters (€800-€1,500): Last 20+ years → one-time investment = cheaper in the long run (plus: better water quality + less maintenance).

✓ People with premium pool facilities (who appreciate attention to detail)
Your pool is premium (natural stone terrace, LED lighting, counter-current system, pool robot). You want: Every component to be premium quality (no cheap filter next to a €5,000 heat pump). High-performance filter: Made in Italy (professional manufacturing), transparent cover (meticulous attention to detail), GRP + gelcoat (like a luxury yacht) → matches a premium system .

Product description: When depth meets uniformity

The concept: Depth filtration = dirt is distributed over the entire height

Standard sand filters have a filter height of 400-500mm (shallow bed). Problem: Dirt collects in the top 10-15 cm (where the flow velocity is highest) → the bottom 25-30 cm hardly function → the filter clogs quickly (the top layer is full, the bottom layer is empty).

Deepbed filters have a filter height of 650-950 mm (50% deeper). Advantage: Dirt is distributed evenly across the entire depth (top, middle, and bottom layers all work together) → filter clogs 3-4 times slower .

Why is that?

Filter velocity (m/h) = flow rate (m³/h) ÷ filter area (m²).

Example standard filter (Ø 600mm):

• Filter area: 0.28 m²
• Flow rate: 15 m³/h
• Filter speed: 15 ÷ 0.28 = 54 m/h (too fast – water rushes through)

Example high-film filter (Ø 800mm):

• Filter area: 0.50 m²
• Flow rate: 15 m³/h
• Filter velocity: 15 ÷ 0.50 = 30 m/h (optimal – water flows slowly)

At low filtration speeds: Water flows slowly through the filter bed → dirt is distributed over the entire depth (not just at the top) → filter works evenly → clogs much more slowly .

Fiberglass reinforced polyester + gelcoat – 20+ year lifespan

Material: GRP (glass fiber reinforced plastic) + gelcoat outer coating.

What is GRP?

Polyester resin (plastic) + glass fibers (woven) → laminated together → results in GRP (extremely stable, lightweight, corrosion-free).

Where is GRP used? Boat hulls (sailboats, motorboats), wind turbine blades, sports car bodies (Lotus, Corvette) – anywhere where extreme robustness + lightness + durability is required.

What is gelcoat?

Outer coating (similar to paint, but thicker) → protects GRP from UV radiation, chemicals, and mechanical wear.

Advantages of GRP + Gelcoat:

• UV-resistant (sun does not damage material – no yellowing, no embrittlement)
• Chemical resistant (chlorine, salt, pH minus – none of these attack the material)
• Corrosion-free (no rust, no oxidation – ideal for saltwater)
• Smooth surface (gelcoat is mirror-smooth – easy to clean, no biofilm formation)
• 20+ years lifespan (with proper use – like boat hulls)

Comparison to standard filters (PE/PP plastic):

Standard filter: PE/PP plastic (polyethylene, polypropylene) → not UV-resistant (sun destroys material) → becomes brittle after 5-10 years → cracks develop → replacement required .

High-film filter: GRP + Gelcoat → UV-resistant → no embrittlement → lasts 20+ years .

Transparent lid – visual inspection without opening

Standard filter: Lid is opaque (white, grey) → You cannot see what is inside → You have to guess when backwashing is necessary (according to manometer pressure – but the manometer only shows "symptom", not "cause").

High-layer filter: The lid is transparent (see-through) → You can see the filter bed (sand level, degree of contamination, water level).

What can you see?

• Sand level (is there enough sand? Or was sand lost during backwashing?)
• Level of contamination (top layer dark = filter is full → backwashing required)
• Water level (is the filter properly vented? Or is there air in the system?)
• Cracks/damage (is the filter bed uniform? Or has a channel formed – "channeling" = water flows through a channel, bypassing the filter bed)

Advantage: You can see exactly when backwashing is necessary (no guessing) → You save time (no unnecessary opening/checking) + optimize the backwash interval (not too early, not too late).

6-way valve – All operating modes

Standard in all high-layer filters: 6-way valve (top-mount, mounted on the lid).

6 operating modes:

1. Filter (Filtering): Normal operation. Water flows from top to bottom through the filter bed → filtered → back to the pool.

2. Backwash: Water flows from bottom to top (reverse direction) → filter bed is stirred up → dirt is rinsed out → flows into wastewater.

3. Rinse: After backwashing. Water flows normally (top to bottom) → rinses away any remaining dirt → flows into the wastewater (not back to the pool).

4. Waste (Emptying): Water flows directly from pool to wastewater (bypassing filters) → for pool emptying, basic cleaning, water changes.

5. Recirculate: Water flows directly back to the pool (bypassing the filter) → for chemical distribution (e.g., after shock chlorination → distribute chlorine evenly without filtering).

6. Closed: All valves closed → no water flows → for maintenance (opening filters, changing sand, repairs).

Important: Only switch the valve when the pump is off (pump off → switch valve → pump on) → otherwise the valve will be damaged.

Depth filtration (high-layer principle) – dirt distributed over the entire depth

How does depth filtration work?

Water flows from top to bottom through a filter bed (quartz sand or glass filter medium, 0.4-1.2 mm grain size).

For standard filters (400mm height):

• Water flows through quickly (high filter speed 50-60 m/h)
• Dirt collects in the top 10-15 cm (where the current is strongest).
• The lower 25-30 cm hardly function (water flows through channels – "channeling")
• Filter clogs quickly (top layer is full)

For high-profile filters (650-950mm height):

• Water flows through slowly (low filter speed 30-40 m/h)
• Dirt is distributed evenly over the entire depth (working on the upper, middle, and lower layers).
• No channeling (no channels – water permeates the entire filter bed)
• Filter clogs 3-4 times slower (all layers work evenly)

The result: You backflush every 4 weeks (instead of every week) = 75% less work + 75% less water waste .

Crystal-clear water quality – finest particles trapped

Standard filter: Filters particles >30-50 microns (large particles – leaves, insects, sand).

High-film filter: Filters particles >10-20 microns (finest suspended particles – dust, pollen, bacteria).

Why is a high-layer filter finer?

Slower filter speed (30-40 m/h instead of 50-60 m/h) → water flows slowly through the filter bed → particles have more time to attach to sand grains → finer filtration .

Plus: Deeper filter bed (650-950mm instead of 400mm) → particles have to travel a longer distance through sand → more opportunities to be trapped → finer filtration .

The result: water is not only "clean" (no leaves), but "crystal clear" (no suspended particles – you can see the bottom at a depth of 3m sharply , like freshly cleaned glasses).

3 sizes – For pools 80-180 m³

Size 1: Ø 650mm (for pools up to 80 m³)

Technical data:

• Diameter: 650mm
• Filter area: 0.33 m²
• Max. flow rate: 15 m³/h
• Max. pool volume: 80 m³
• Amount of sand: 475 kg (approx. 350 liters of sand)
• Connection: 1½" external thread
• Weight: 44 kg

Suitable for:

• Small pools (6 x 3m, 20 m³)
• Above-ground pools (Ø 4.5m, 15 m³)
• Compact technical rooms (limited space)

Size 2: Ø 800mm (for pools up to 140 m³)

Technical data:

• Diameter: 800mm
• Filter area: 0.50 m²
• Max. flow rate: 25 m³/h
• Max. pool volume: 140 m³
• Amount of sand: 675 kg (approx. 500 liters of sand)
• Connection: 2" external thread
• Weight: 52 kg

Suitable for:

• Family pools (8 x 4m, 32 m³)
• Pools with heat pump (medium flow rates)
• Standard technical rooms

Size 3: Ø 950mm (for pools up to 180 m³)

Technical data:

• Diameter: 950mm
• Filter area: 0.71 m²
• Max. flow rate: 35 m³/h
• Max. pool volume: 180 m³
• Amount of sand: 920 kg (approx. 680 liters of sand)
• Connection: 2" external thread
• Weight: 65 kg

Suitable for:

• Large pools (10 x 5m, 50 m³)
• Premium systems (high circulation rates)
• 24/7 continuous filtration (quiet, slow, efficient)

Technical specifications at a glance

Common features (all sizes):

Material:

• Filter body: Glass fiber reinforced polyester (GRP)
• Exterior coating: Gelcoat (UV & chemical resistant)
• Lid: Transparent (visual inspection)
• Color: White

Operation:

• Valve: 6-way valve (top-mount)
• Working pressure: 2.5 bar
• Maximum operating temperature: 42°C
• Pressure gauge: Integrated
• Backwash limit: ≥0.5 kPa (≥0.5 bar pressure increase)

Filtration:

• Filter material: Quartz sand or glass filter medium (0.4-1.2 mm)
• Filter depth: 650-950mm (high-layer principle)
• Filter velocity: <50 m/h (optimal)

Manufacturer:

• Made in Italy (professional manufacturing)

Size comparison:

Model	O	Filter area	Max. flow rate	Max. Pool	Amount of sand	Connection	Weight
Ø 650mm	650mm	0.33 m²	15 m³/h	80 m³	475 kg	1½"	44 kg
Ø 800mm	800mm	0.50 m²	25 m³/h	140 m³	675 kg	2"	52 kg
Ø 950mm	950mm	0.71 m²	35 m³/h	180 m³	920 kg	2"	65 kg

Scope of delivery

✓ High-performance filter (GRP + gelcoat, white)
✓ 6-way valve (top-mount, with handle)
✓ Transparent lid (visual inspection)
✓ Manometer (integrated pressure gauge)
✓ Connection set (1½" or 2") external thread
✓ Assembly instructions

Not included in the delivery:

• Filter sand or glass filter medium (order separately – 475/675/920 kg depending on size)
• Pipes (PVC pipes 50/63mm)
• Filter pump (separate – e.g. Flotide E-Turbo VS recommended)

Why people choose the high-level filter

"Previously: Backwashing every week (48 times/year, 16 hours of work, 48,000 liters of water wasted). With a high-layer filter: Backwashing every 4 weeks (12 times/year, 4 hours, 12,000 liters). I save 75% of the work and water."
– Mr. K., 52 years old, maintenance hater

"My water used to be 'okay' (no leaves, but slightly milky). With a high-level filter: diamond clear. I can see every grain of sand at the bottom 3m deep. Crystal clear quality. Finally satisfied."
– Ms. M., 48 years old, Crystal Clear purist

"I have a Flotide inverter pump (runs 24/7 at 900 rpm). The old standard filter still clogged every week. High-profile filter Ø 950mm: clogs only every 4 weeks (deep filter bed distributes dirt evenly). Perfect for 24/7 filtration."
– Mr. S., 55 years old, permanent filtration

"The transparent lid is brilliant. I can see exactly when backwashing is necessary (the top layer of sand turns dark). Before: I guessed (by the pressure gauge). Now: I see. Much better."
– Ms. L., 50 years old, detail optimizer

"The difference in GRP + gelcoat quality is noticeable. My old PE filter became brittle (cracks) after 7 years. High-film filter (Made in Italy): Feels like a luxury yacht hull. Will last 20+ years."
– Mr. T., 58 years old, premium investor

Frequently Asked Questions – Honest Answers

Q: Does a high-layer filter really save 75% backwash water?
A: Yes (with the same filter performance). Standard filter: Backwash every week (48 times/year x 1,000 liters = 48,000 liters). High-layer filter: Backwash every 4 weeks (12 times/year x 1,000 liters = 12,000 liters). Savings: 36,000 liters/year = 75%.

Q: What size pool do I need?
A: Rule of thumb: Pool volume (m³) ÷ 6 = minimum flow rate (m³/h). Example: Pool 48 m³ ÷ 6 = 8 m³/h minimum flow rate. Recommendation: Choose a filter larger than the minimum (for a lower filtration rate). For a 48 m³ pool: Ø 800 mm (25 m³/h) instead of Ø 650 mm (15 m³/h) → better filtration.

Q: Does it work with any sand (or do I need special sand)?
A: Standard quartz sand (0.4-1.2 mm grain size) works. Better: Glass filter medium (AFM, recycled glass) → finer filtration (filters particles >10 microns), longer lifespan (no sand change every 3-5 years). High-layer filters work with both.

Q: Is installation complicated?
A: Medium. The filter is heavy (44-65 kg empty , 500-1,000 kg full of sand ) → requires a stable base (concrete slab, screed – not a wooden floor). Hydraulic connection (50/63 mm pipes) → manageable for a tradesperson. Filling with sand → time-consuming (pour 475-920 kg of sand into the filter, slowly and carefully). Recommendation: Hire a professional for installation (saves time and reduces the risk of errors).

Q: How often do I need to change the sand?
A: Quartz sand: Every 3-5 years (sand becomes rounded due to backwashing → filters less effectively). Glass filter medium: 8-10 years (glass does not become rounded → filters well for longer). High-layer filter (due to infrequent backwashing): Sand lasts longer (less mechanical stress).

Q: Does it work with a saltwater pool?
A: Yes (GRP + gelcoat is corrosion-free). Saltwater/chlorine do not attack the material. Same lifespan as freshwater pools.

Q: Transparent lid yellows (becomes cloudy)?
A: Possible (after 10-15 years of UV exposure). However: Yellowing is purely cosmetic (functionality remains unchanged). The lid is replaceable (replacement part costs €50-100).

Q: Is a high-level filter worthwhile for a small pool (20 m³)?
A: It depends. For a small pool , the absolute benefit is minimal (you backwash less often, but only save 20,000 liters/year instead of 36,000 liters/year). A high-performance filter is worthwhile for pools of 40-50 m³ or more (where backwash frequency and water consumption are significant).

Q: Can I use a high-level filter with an old pump?
A: Yes (works with any pump). However: High-layer filters work best with a variable-speed pump (Flotide, inverter) → low filter velocity (30-40 m/h) → optimal depth filtration. With an older pump (single speed, full throttle): It works, but the filter is not used optimally.

Secure your Crystal Clear water + 75% less backwashing now!

If you want crystal-clear water. If you want to backflush less often. If you want to make a proper investment once – for the next 20 years.

The high-layer filter is built for Crystal Clear purists and maintenance haters who want the best water quality , infrequent backwashing , and longevity – and are willing to invest in premium Italian quality.

Depth filtration. GRP + Gelcoat. Made in Italy.

👉 Order high-efficiency filters now

✓ Deep filtration (backwashing every 4 weeks instead of every week)
✓ Crystal-clear water quality (diamond clarity)
✓ GRP + Gelcoat (20+ year lifespan)
✓ Transparent lid (visual inspection without opening)
✓ 6-way valve (all operating modes)
✓ 3 sizes (for pools 80-180 m³)
✓ Made in Italy (professional manufacturing)
✓ 75% less backwash water (36,000 liters/year saved)

Or would it be better to seek advice first?

👉 Request a free consultation

✓ Non-binding
✓ What size pool is right for you?
✓ Quartz sand or glass filter medium?
✓ Combination with variable pump?

The filter is running. The pressure gauge reads 0.9 bar. As you can see, no action is required.

The high-performance filter isn't "just a filter." It's your guarantee of crystal-clear water . Your backwash savings. Your 20-year investment. Fiberglass technology like luxury yachts. Depth filtration like professional systems. The heart and lungs of your pool – consistent, efficient, and absolutely reliable.

Its crystal-clear water. Its tranquility. Its high-level filter.

Their standard filter is a wasteful machine. Backwashing every week wastes 48,000 liters per year. The water is "okay" (but not crystal clear). The filter becomes brittle after 5-10 years (requiring replacement). This is wasteful.

The high-performance filter puts an end to this waste. Backwashing every 4 weeks (saving 36,000 liters/year). Crystal-clear water (diamond quality). 20+ year lifespan (no replacement required). One-time investment. Long-term benefits.

Get the high-performance filter now – and experience what Italian engineering can truly do: Depth. Clarity. Durability.