Biological Filtration Tanks for RAS – Stable Biofiltration Solutions

Features

• Multi-Zone Internal Design
  Segmented chambers allow for dedicated zones of aeration, settlement, and biofilm growth. This structure stabilizes ammonia-to-nitrite conversion even under variable feed loads.

• Sloped Bottom with Drain Port
  Every tank includes a precision-angled base and center sump outlet. This supports daily sludge flushing — a standard procedure in most international RAS operations.

• Compatible with MBBR and Static Media
  From floating K1 to structured fixed beds, the tank structure supports multiple media types with uniform flow dynamics. We’ll calibrate the nozzle arrangement and flow rate accordingly.

• Heavy-Duty Material Options
  Available in chemical-resistant PP or marine-grade HDPE, based on farm water chemistry. Wall thickness, reinforcement ribs, and UV-stabilized coatings are customizable.

• Easy Retrofit for Existing Systems
  Inlet and outlet pipe fittings can be matched to legacy tanks. Particularly useful for global clients upgrading from concrete or fiberglass units.

• Service Hatch & Media Access Port
  Oversized top port allows for quick media inspection and biofilm cleaning. Optional mesh baskets available for safe media draining during harvest or tank cleaning.

• Stable Bio-Colony Anchoring
  Interior flow baffles minimize dead spots while maximizing oxygen retention — key for sustaining high-density bio colonies over time.

Packaging
Each biological filtration tank is individually wrapped using stretch film and reinforced corner guards. For international shipments, units are placed in fumigated wooden crates or heavy-duty pallet bases to prevent deformation or puncture during transit. All inlets/outlets are sealed with flange covers or PE bags to protect against dust and moisture.

Loading & Container Use
Tanks are nested where size permits, and vertical stacking is used for small-to-medium models to optimize cubic efficiency. A 20GP can typically load 10–15 units (1.5m³–2.5m³ range) depending on tank taper and attachments. For full RAS system integration, coordinated loading with other components like bio-media, pumps, and control boxes is available on request.

Lead Time

• Standard stock: 7–10 working days

• Customized dimensions or integrated accessories: 18–25 days

• Large-volume OEM orders: Negotiable, based on production schedule

Shipping Options
FOB Shenzhen or Guangzhou by default. CIF or DDP terms available upon request. Long-term clients often use consolidated shipping with other YUTANK components to reduce freight cost per unit. For certain countries, we offer agent-based coordination for local clearance and last-mile delivery.

Documentation & Support
Commercial invoice, packing list, certificate of origin (Form A, E, FTA, or RCEP as applicable) provided by default. Tank configuration drawings and installation guidelines are included in PDF format for engineering teams.

FAQ – Biological Filtration Tanks for RAS

Q1: What type of bio-media do your tanks support?
Most YUTANK biofiltration tanks are designed to work with floating K1/K3 carriers and structured media like Bio-Balls or Bio-Rings. Each unit comes with perforated media retention screens and optional airlift diffusers if requested. Clients can specify media brand or volume during the ordering process.

Q2: Can I integrate these tanks into an existing RAS layout with limited space?
Yes, most models offer vertical or narrow footprint formats (e.g., 1.5m height x 0.8m diameter) suitable for retrofitting in compact hatcheries. Our team can provide dimensional drawings and assist in layout matching if you share your site plan or existing tank specs.

Q3: How do you ensure bacterial colonization remains stable during transport and installation?
Tanks are shipped empty, but we recommend soaking the bio-media for 48–72 hours post-installation before introducing fish. For farms reusing old media, we advise sanitization with low-concentration potassium permanganate followed by seeding with nitrifying cultures. Guidelines included.

Q4: What’s the expected replacement cycle for your biological filtration tanks?
The PP or HDPE tank body has a service life of 8–12 years depending on UV exposure and chemical contact. Media may need partial replenishment every 2–3 years depending on fouling levels. Aeration diffusers (if included) are typically replaced every 18–24 months in saltwater use.

Q5: Can I order biofilters together with other components like UV, skimmers, and controllers?
Absolutely. YUTANK offers full RAS system integration. You can consolidate orders with drum filters, protein skimmers, oxygen cones, and smart control cabinets. This ensures compatibility and reduces freight cost per unit. Our overseas clients often request full-kit delivery.