Filtration that keeps up with your feed.
Solids, fine particles and ammonia leave every tank, every hour. We size the drum filter, skimmer and biofilter together, on peak feed, so no stage becomes the bottleneck.
drum filter flow range
standard 316L screen
metal matched to salinity
standard units ship
Four stages, in this order, for a reason.
Solids caught early never become ammonia. That is why the drum filter comes first and the biofilter last.
مرشحات الأسطوانة
Settlers
مزيلات البروتين
مرشحات حيوية MBBR
More solids out is not the same as cleaner water.
A 2025 trial on 12 freshwater trout RAS compared four solids-removal set-ups (). Each stage did a different job, which is why the chain is planned as a whole.Aquacultural Engineering, 2025
- removed the most organic matter per day.Swirl separator + drum filter:
- gave the best water quality. Against a drum filter alone, swirl + foam fractionation cut total COD from 35.7 to 26.1 mg/L and turbidity from 3.41 to 2.04 FNU.Foam fractionation:
- with swirl + foam fractionation and no drum, phosphorus was higher. Particles too small for the swirl but too large for the foam got through.A gap in the chain shows up:
The species and water decide the chain.
Not every farm needs every stage. This is where we usually start, before your feed and flow numbers refine it.
Freshwater grow-out (tilapia, bass)
Required
On high-solids systems
Optional at high density
Required
Shrimp, brackish water
Required
Often used
Recommended
Required
Marine fish
Required, wetted metal matched to salinity
اختياري
Required
Required
Hatchery and nursery
Required, fine screen
Rarely
Recommended
Required, stable load
Farm upgrade
Usually the first upgrade
Survey existing
Depends on density goal
Resize on new feed load
A starting point only. Final selection follows peak daily feed, peak flow and water source.
We size the chain together, before we quote.
A drum filter sized on average flow overflows at peak. A biofilter sized on tank volume stalls when feed rises. We check these on every order.
Peak flow
With margin, not the daily average.
أقصى تغذية يومية
It sets the solids and ammonia load on every stage.
Head loss and levels
So gravity flow still works through the whole chain.
Service space
Room around each unit for cleaning and repair.
Fresh, brackish or seawater.
مياه عذبة
PP or stainless
304 stainless common; 316L screen
مياه قليلة الملوحة
PP or stainless
316 / 316L; frame and fasteners confirmed per order
مياه بحرية
PP preferred
Matched to salinity; the industry steps up to duplex stainless
We confirm every wetted part against your salinity and temperature before quoting.
One factory, one sized chain.
Made in our factory
Drum filters, protein skimmers and MBBR tanks are made in our 12,000 m² factory in Boluo, Huizhou.
Sized together
Every stage checked against the same flow and feed numbers.
Material for your water
Wetted parts confirmed for your salinity.
15-day standard units
Custom systems in 35 days.
Not always. In freshwater it helps at high stocking density or when fine solids cloud the water. In marine and shrimp systems it is standard.
Yes. Send your peak flow and water type and we check the size against the rest of your system before quoting.
On peak daily feed, because feed decides how much ammonia the bacteria must remove. Tank volume alone gives the wrong answer.
PP bodies where possible. Metal parts in contact with water are chosen for the salinity, stepping up to duplex stainless in seawater. We confirm each wetted part per order.
On high feed loads it takes load off the drum filter. On lighter systems the drum filter alone is usually enough.
Send peak flow and feed. Get a sized chain.
We return a filtration chain with model sizes, matched to your tanks and species.
- Stage-by-stage model selection
- Flow and head-loss check
- Material check for your water
- Standard units ship in 15 days