MAT Freshwater Protein Skimmers

Q: Do protein skimmers actually work in fresh water?

Yes — MAT spent over 12 months developing venturi injectors and high-pressure feed pumps specifically so these units foam in fresh and brackish water rather than only in seawater.

Q: How much does it remove?

An independent 2020 field trial by the Norwegian Institute for Water Research (NIVA) measured up to 70% particle removal on MAT freshwater protein skimmers.

Q: Which model do I need?

Match the flow you want to pass through the skimmer to the model rated for it at a 2-minute dwell time — the range runs from 3 m³/hr on the PS300-FW to 615 m³/hr on the PS3000-FW.

Q: Do I have to rebuild my filtration to fit one?

No — the skimmer is designed as an add-on to an existing hatchery RAS filtration setup, drawing from and returning to the tank.

Q: What does it do for stocking density?

By lifting water quality in pre-smolt tanks it lets a farm carry more fish and more feed in the same tank; MAT quotes a target of 20% or better water quality improvement.

Q: Can the foam level be automated?

Yes — automated foam level controllers are available as an option, which MAT recommends for farms operating under tightly controlled fresh water conditions.

Q: How do I get a price?

Request a quote with your recirculating flow, tank biomass and daily feed rate, water salinity and whether you want foam level automation, and we will come back with the right model and lead time.

Foam fractionators designed to skim fresh and brackish water in recirculating systems.

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Categories: MAT Filtration Technologies, Protein Skimmers

Applications: Hatchery, RAS

Brand: MAT

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Product Information

Key Features

Purpose-built for fresh and brackish water — developed for salmon pre-smolt tanks after more than 12 months of venturi injector development, so it foams in water where conventional marine skimmers will not
Independently field-trialled by the Norwegian Institute for Water Research (NIVA) in 2020, which measured up to 70% particle removal
Fits as an add-on to an existing hatchery RAS filtration train — no redesign of the main loop needed
Nine models from PSF-22 to PSF-1300, covering 7 to 690 m³/hr with inlets from 75 mm to 500 mm
High-pressure venturi pump feeds tank water into a water cyclone inside the skimmer body, giving fine, dense and constant bubbles
Upgraded body with a high-efficiency protein cap collector, higher head pump and redesigned venturi
Optional automated foam level controllers for farms running to tight, controlled fresh water conditions
Choosing your model: these skimmers are rated on the water flow you pass through them at a 2-minute dwell time — that is the reference condition for every figure in the table below, so match your recirculating flow to a model with that dwell time held. Because skimming also depends on protein loading, confirm your tank biomass and daily feed rate with us as well; MAT does not publish a biomass or feed-load rating per model.

Specifications

Model	Flow at 2-minute dwell	Dimensions (D × W × H)	Inlet / Outlet
PSF-22 (was PS500-FW)	7 m³/hr (117 LPM)	1,195 × 1,043 × 1,927 mm	75 mm / 90 mm
PSF-62 (was PS750-FW)	21 m³/hr (350 LPM)	1,195 × 1,525 × 2,320 mm	110 mm / 140 mm
PSF-220 (was PS1000-FW)	39 m³/hr (650 LPM)	1,400 × 2,220 × 2,670 mm	160 mm / 225 mm
PSF-280 (was PS1250-FW)	82 m³/hr (1,367 LPM)	1,810 × 2,550 × 3,085 mm	200 mm / 250 mm
PSF-360 (was PS1500-FW)	135 m³/hr (2,250 LPM)	2,100 × 2,810 × 3,630 mm	225 mm / 280 mm
PSF-600 (was PS2000-FW)	243 m³/hr (4,050 LPM)	2,820 × 3,350 × 3,705 mm	315 mm / 315 mm
PSF-800 (was PS2350-FW)	435 m³/hr (7,250 LPM)	2,900 × 4,000 × 4,800 mm	400 mm / 400 mm
PS2650-FW (discontinued – contact us)	561 m³/hr (9,350 LPM)	2,840 × 3,220 × 4,770 mm	2 x 355 mm / 2 x 315 mm
PSF-1300 (was PS3000-FW)	690 m³/hr (11,500 LPM)	3,805 × 4,775 × 4,825 mm	500 mm / 500 mm

Downloads

MAT Protein Skimmer Spec Sheet

Frequently Asked Questions

Do protein skimmers actually work in fresh water?

How much does it remove?

Which model do I need?

Do I have to rebuild my filtration to fit one?

What does it do for stocking density?

Can the foam level be automated?

How do I get a price?

Spare Parts & Consumables

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MAT Freshwater Protein Skimmers

Product Information

Key Features

Specifications

Downloads

Frequently Asked Questions

Spare Parts & Consumables

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