# SIGMA Aquaculture Equipment

> SIGMA designs, manufactures and exports aquaculture equipment - recirculating aquaculture systems (RAS), biofloc tanks, filtration, aeration and water-quality control - shipped to farms and groups worldwide (Japfa, Japan Nissui, Ghana, Mozambique, Bangladesh, Malaysia).

Site: https://www.sigma-aquaculture.com/ (English; also available in Arabic, Spanish, French, Portuguese, Indonesian, Thai, Russian, Vietnamese and Simplified Chinese.)

## Products
- [Automatic Rotary Drum Filter](https://www.sigma-aquaculture.com/automatic-rotary-drum-filter/): Self-cleaning rotary drum filters for RAS & aquaculture — automatic solids removal, multiple flow rates & micron options. Factory-direct from SIGMA. Request sizing & pricing.
- [Bag Filter](https://www.sigma-aquaculture.com/bag-filter/): Industrial bag filters for aquaculture & RAS — fine particle removal, easy bag change, multiple micron ratings. Factory-direct from SIGMA. Request specs & a quote.
- [Biological Filter](https://www.sigma-aquaculture.com/biological-filter/): Moving-bed & media biofilters for RAS and aquaculture — high surface-area media, stable nitrification, removes ammonia. Custom sizing, factory-direct from SIGMA. Request a quote.
- [Commercial Sand Filter](https://www.sigma-aquaculture.com/commercial-sand-filter/): High-flow commercial sand filters for aquaculture, RAS & pond water treatment — efficient solids removal, easy backwash. Multiple sizes, factory-direct from SIGMA. Get a quote.
- [Crab House](https://www.sigma-aquaculture.com/crab-house/): Stackable crab box / crab-condo systems for soft-shell & mud crab farming — individual cells, integrated water flow, space-saving. Custom setups from SIGMA. Request a quote.
- [Dissolved oxygen cone](https://www.sigma-aquaculture.com/dissolved-oxygen-cone/): Oxygen / Speece cones that dissolve pure O2 for high-density RAS & biofloc farms. High transfer efficiency, multiple capacities. Manufacturer-direct from SIGMA. Request specs & a quote.
- [Electricity Generator](https://www.sigma-aquaculture.com/electricity-generator/): Reliable diesel generators for fish farms & aquaculture — backup power for aerators, pumps & RAS, multiple kVA ratings. Factory-direct from SIGMA. Request specs & a quote.
- [Feeding machines](https://www.sigma-aquaculture.com/feeding-machines/): Automatic & smart fish-feeding machines for ponds, cages & RAS — programmable timing, even broadcast, saves labor & feed. Multiple capacities from SIGMA. Get a quote.
- [Filter Media](https://www.sigma-aquaculture.com/filter-media/): High-surface-area bio filter media (MBBR carriers, bio-balls) for RAS & aquaculture biofilters — fast nitrification, durable. Bulk supply from SIGMA. Request specs & a quote.
- [Fish egg hatchery incubator](https://www.sigma-aquaculture.com/fish-egg-hatchery-incubator/): Fish egg incubators & hatchery jars for tilapia, trout & carp — high hatch rates, adjustable flow, complete hatchery setups. Manufacturer-direct from SIGMA. Request details & a quote.
- [Fish Shrimp Feed](https://www.sigma-aquaculture.com/fish-shrimp-feed/): High-protein floating & sinking feed for tilapia, shrimp & carp — optimized FCR, stable in water, full size range. Bulk aquafeed supply from SIGMA. Request details & a quote.
- [Fish Tank Heating Equipment](https://www.sigma-aquaculture.com/fish-tank-heating-equipment/): Heating systems & heat pumps for fish tanks, hatcheries & RAS — precise temperature control, energy-efficient, for warm-water species. Factory-direct from SIGMA. Get a quote.
- [Fishing Nets](https://www.sigma-aquaculture.com/fishing-nets/): Strong aquaculture fishing nets, seine & harvest nets for fish & shrimp farms — knotless options, custom mesh & length. Factory-direct from SIGMA. Request sizes & a quote.
- [Float Cage](https://www.sigma-aquaculture.com/float-cage/): HDPE floating fish cages & net pens for lakes, reservoirs & sea farming — durable frames, wave-resistant floats, custom sizes. Factory-direct from SIGMA. Get a quote.
- [FRP Fish Tank](https://www.sigma-aquaculture.com/frp-fish-tank/): Corrosion-proof FRP (fiberglass) fish tanks for hatcheries, RAS & live-holding. Custom shapes & sizes, smooth food-safe surface. Manufacturer-direct from SIGMA. Get a quote.
- [Galvanized sheet tank](https://www.sigma-aquaculture.com/galvanized-sheet-tank/): Galvanized steel fish-farming tanks with food-grade liner — strong, fast on-site assembly, long service life. Custom diameters for fish & shrimp. Factory-direct from SIGMA. Get a quote.
- [HDPE Fish Tank](https://www.sigma-aquaculture.com/hdpe-fish-tank/): Durable HDPE fish-farming tanks — on-site welding, 15-year liner, lower cost than earthen ponds. Any diameter & depth. SIGMA ships worldwide. Get sizes & a quote in 12h.
- [ORP DO TDS pH Multi-Parameter Water Tester](https://www.sigma-aquaculture.com/orp-do-tds-conductivity-ph-multi-parameter-water-quality-monitor-meter/): Online multi-parameter water-quality monitor for aquaculture — measures dissolved oxygen, pH, ORP, TDS & conductivity in real time. Protect your stock. Factory-direct from SIGMA.
- [Oxygen supply diffuse nano pipes for Biofloc fish farm](https://www.sigma-aquaculture.com/oxygen-supply-diffuse-nano-pipes-for-biofloc-fish-farm-2/): Micro/nano-bubble oxygen diffuser pipes & aeration hose for biofloc and pond fish farming — fine bubbles, high oxygen transfer, clog-resistant. Factory-direct from SIGMA. Get a quote.
- [Paddle Wheel Aerator](https://www.sigma-aquaculture.com/paddle-wheel-aerator/): Energy-efficient paddle wheel aerators for shrimp & fish ponds — strong circulation & oxygen transfer, durable impellers. Multiple sizes, factory-direct from SIGMA. Get a quote.
- [Probiotics for Aquaculture farms](https://www.sigma-aquaculture.com/probiotics-for-aquaculture-farms/): Aquaculture probiotics for biofloc, ponds & RAS — stabilize water quality, improve gut health & feed conversion, reduce disease. Bulk supply from SIGMA. Request specs & a quote.
- [Protein skimmer filter](https://www.sigma-aquaculture.com/protein-skimmer-filter/): Industrial protein skimmers / foam fractionators for RAS & marine aquaculture — removes dissolved organics, improves water clarity & oxygen. Factory-direct from SIGMA. Get a quote.
- [PVC Fish Tank](https://www.sigma-aquaculture.com/pvc-fish-tank/): Modular PVC fish-farming tanks — quick assembly, energy-saving, food-safe liner, lower cost than concrete. Any size for biofloc & RAS. Factory-direct from SIGMA. Get a quote.
- [RAS system](https://www.sigma-aquaculture.com/ras-system/): Complete recirculating aquaculture (RAS) systems: drum filters, biofilters, oxygen cones, pumps & monitoring. Custom-designed for your species & volume. Manufacturer-direct. Get a quote.
- [Rectangle Aqua Tank](https://www.sigma-aquaculture.com/rectangle-aqua-tank/): Rectangular fish-farming tanks for hatcheries, RAS & live-holding — space-efficient layout, custom dimensions, food-safe finish. Factory-direct from SIGMA. Get a quote.
- [Rectangle fish tank](https://www.sigma-aquaculture.com/rectangle-fish-tank/): The Rectangle fish tank are designed to supply aquaculture anywhere needed and immediately available. The tanks is easy installation. The wide range of optional features and the possibility customized, suitable for different indoor and outdoor applications.
- [Regenerative Air Blower](https://www.sigma-aquaculture.com/regenerative-air-blower/): High-pressure regenerative (ring) blowers for aquaculture aeration, RAS & biofloc — oil-free, quiet, energy-efficient. Multiple capacities, factory-direct from SIGMA. Get a quote.
- [Root Blower](https://www.sigma-aquaculture.com/root-blower/): High-efficiency roots blowers for biofloc, RAS & pond aeration. Direct-from-factory pricing, multiple capacities, worldwide export. Request specs & a quote from SIGMA engineers.
- [Screen Filter](https://www.sigma-aquaculture.com/screen-filter/): Motorized self-cleaning screen filters for aquaculture & RAS — automatic backwash, fine mesh, low maintenance. Multiple sizes, factory-direct from SIGMA. Request specs & pricing.
- [Submersible Water Pump](https://www.sigma-aquaculture.com/submersible-water-pump/): Durable submersible water pumps for fish ponds, RAS & aquaculture circulation — high flow, low energy, corrosion-resistant. Multiple capacities, factory-direct from SIGMA. Get a quote.
- [UV Filter](https://www.sigma-aquaculture.com/uv-filter/): UV sterilizers for aquaculture & RAS — kill bacteria, parasites & algae spores, prevent disease without chemicals. Multiple flow rates, factory-direct from SIGMA. Get a quote.
- [Oxygen Generator for Aquaculture (PSA)](https://www.sigma-aquaculture.com/oxygen-generator-for-aquaculture/): PSA oxygen generator for aquaculture makes high-purity oxygen on site from ambient air, feeding cones and diffusers for dense fish and shrimp ponds.
- [Fish Feed Pellet Machine / Pellet Mill](https://www.sigma-aquaculture.com/fish-feed-pellet-machine/): Fish feed pellet machine — a flat-die pellet mill that presses your own mix into sinking fish feed pellets for tilapia, catfish, carp and shrimp. Electric or diesel drive.
- [Solar Powered Pond Aerator System](https://www.sigma-aquaculture.com/solar-pond-aerator/): Solar pond aerator system pairs a solar panel and battery bank with a paddle wheel or air pump, running off-grid pond aeration day and night.

## Applications
- [Biofloc Fish Farming Equipment](https://www.sigma-aquaculture.com/applications/biofloc-fish-farming/): Tanks, aeration, probiotics and monitoring for high-density biofloc culture.
- [RAS Recirculating Aquaculture System Equipment](https://www.sigma-aquaculture.com/applications/ras-recirculating-system/): Every stage of a closed-loop RAS line - mechanical, biological, oxygenation and disinfection.
- [Tilapia Farming Equipment](https://www.sigma-aquaculture.com/applications/tilapia-farming-equipment/): Tanks, aeration, water-quality and health control for intensive tilapia culture.
- [Shrimp Farming Equipment](https://www.sigma-aquaculture.com/applications/shrimp-farming-equipment/): Heavy aeration, biofloc tanks and biosecurity equipment for intensive shrimp culture.
- [Applications & Export Cases hub](https://www.sigma-aquaculture.com/applications/): Solutions by farming type and the real export projects behind them.
- [Trout Farming Equipment & Systems](https://www.sigma-aquaculture.com/applications/trout-farming-equipment/): Trout farming equipment from SIGMA: raceway/flow-through tanks, submersible pumps, oxygen cones, UV sterilizers and egg incubators for cold-water trout culture.
- [Crayfish Farming Equipment & Systems](https://www.sigma-aquaculture.com/applications/crayfish-farming-equipment/): Crayfish farming equipment from SIGMA: pond tanks, paddle wheel and roots blower aeration, probiotics, feed and water-quality monitors for pond crayfish culture.
- [Freshwater Prawn & Crab Farming Equipment](https://www.sigma-aquaculture.com/applications/freshwater-prawn-farming-equipment/): Freshwater prawn farming equipment from SIGMA: pond tanks, aeration, biofloc and RAS components, prawn feed, plus vertical crab farming boxes for crab culture.
- [Catfish Farming Equipment & Aeration](https://www.sigma-aquaculture.com/applications/catfish-farming-equipment/): Catfish farming equipment from SIGMA: HDPE/PVC tanks, paddle-wheel aerators, roots blowers, feeders, fish feed, probiotics and water-quality monitors for Clarias & Pangasius.
- [Sturgeon Farming Equipment for RAS](https://www.sigma-aquaculture.com/applications/sturgeon-farming-equipment/): RAS sturgeon farming equipment from SIGMA: drum filters, biofilters, dissolved oxygen cones, roots blowers, UV sterilizers and water-quality monitors for indoor sturgeon culture.

## Guides (Blog)
- [Benefit of Biofloc Aquaculture Systems](https://www.sigma-aquaculture.com/benefit-of-biofloc-aquaculture-systems/): Benefit of Biofloc Aquaculture Systems 1. Low Water Exchange Biosecurity Temperature Control Salt Conservation = Inland Marine Operation 2. High Animal Density Intensive -> Superintensive Indoor Operation • Climate Control • Diverse Regions 3. No External Biological Filtration Solids Filtration Common 4. Typically No Soil Interaction Tanks, Lined Ponds, Concrete Vessels, Raceways 5. Primarily Used for Shrimp and Tilapia Other Candidate Taxa and Life Stages
- [Biofloc Issue: Water Reuse](https://www.sigma-aquaculture.com/biofloc-issue-water-reuse/): Biofloc Issue: Water Reuse Advantage: - Retain Water and Reuse for Multiple Growouts - Move inland - Reduce costs of artificial sea salts - Retain biofloc community - Rapid turnaround from harvest to stocking Problem: - Accumulation of Contaminants in Reused Water - Reused water may reduce shrimp growth - Nitrifying experiments with reused water suggests it depresses growth rates.
- [How biofloc technology works?](https://www.sigma-aquaculture.com/how-biofloc-technology-works/): What is biofloc technology and how does it work? A clear step-by-step guide for tilapia & shrimp farmers — plus the tanks, aeration & monitoring gear you need to run a biofloc system.
- [Tilapia Monogenea](https://www.sigma-aquaculture.com/tilapia-monogenea/): Spot and control Monogenea (gill & skin flukes) in tilapia — life cycle, symptoms & treatment. Prevent reinfection with the right filtration, UV & water-monitoring equipment.
- [Tilapia Trichodina](https://www.sigma-aquaculture.com/tilapia-trichodina/): Identify and treat Trichodina in tilapia — symptoms, causes & prevention through water-quality control. See the UV, filtration & monitoring equipment that stops outbreaks.
- [WSD and shrimp](https://www.sigma-aquaculture.com/wsd-and-shrimp/): White spot disease (WSSV) can wipe out a shrimp pond in days — there is no cure. Covers the signs, causes and the biosecurity and water-quality control that prevent outbreaks.
- [Blog library](https://www.sigma-aquaculture.com/blog/): Aquaculture knowledge series - biofloc systems and fish health reading paths.
- [Fish Farming Business Plan: Species, Systems & Costs](https://www.sigma-aquaculture.com/fish-farming-business-plan/): A practical fish farming business plan — species and market fit, system choice, equipment CAPEX, operating costs, and how to size your profit.
- [Backyard Fish Farming for Beginners: Tilapia Basics](https://www.sigma-aquaculture.com/backyard-fish-farming-for-beginners/): Backyard fish farming for beginners — tank options, aeration, and stocking basics for a small tilapia setup, with a note on scaling up later.
- [Fish Disease Diagnosis and Treatment: A Symptom Guide](https://www.sigma-aquaculture.com/fish-disease-diagnosis-and-treatment/): Fish disease diagnosis and treatment by symptom — fungal, bacterial, and parasitic — with links to species-specific guides for the exact cause.
- [Raceway Aquaculture System: Design, Flow & Equipment](https://www.sigma-aquaculture.com/raceway-aquaculture-system/): Raceway aquaculture system design explained — tank geometry, flow and water exchange, plus the equipment a raceway fish farm needs from intake to outlet.
- [Разведение карпа (RU)](https://www.sigma-aquaculture.com/ru/razvedenie-karpa/): Carp farming guide in Russian — pond vs RAS, stocking density, aeration and feed, from the equipment side.
- [Разведение раков (RU)](https://www.sigma-aquaculture.com/ru/razvedenie-rakov/): Crayfish farming guide in Russian — pond, tank and RAS setups, shelters and water control for red claw and native crayfish.
- [Осетровое хозяйство (RU)](https://www.sigma-aquaculture.com/ru/osetrovoe-khozyaystvo/): Sturgeon farming business guide in Russian — species, fingerling sourcing, meat vs caviar economics and why commercial farms run RAS.
- [Criação de Tilápia em Caixa D'água (PT)](https://www.sigma-aquaculture.com/pt/criacao-de-tilapia-em-caixa-dagua/): Brazilian Portuguese guide to raising tilapia in a 500–1000 L water box — realistic stocking, aeration, and when to upgrade to a real tank.

## Export cases (proof)
- [Biofloc tilapia tank export to Japfa Group](https://www.sigma-aquaculture.com/biofloc-tilapia-tank-export-to-japfa-group/): Photo case study of a biofloc tilapia tank shipment supplied to Japfa Group.
- [Fish pond liner export to Ghana](https://www.sigma-aquaculture.com/fish-pond-liner-export-to-ghana/): Photo case study of a fish pond liner shipment exported to a fish farm in Ghana.
- [Fish tank export to Bangladesh](https://www.sigma-aquaculture.com/fish-tank-export-to-bangladesh/): Photo case study of a fish tank shipment exported to a fish farm in Bangladesh.
- [Fish tank export to Japan Nissui](https://www.sigma-aquaculture.com/fish-tank-export-to-japan-nissui/): Photo case study of a fish farm tank shipment supplied to Nissui, Japan.
- [Fish tank export to Malaysia](https://www.sigma-aquaculture.com/fish-tank-export-to-malaysia/): Photo case study of a fish tank shipment exported to a fish farm in Malaysia.
- [Super large fish tank export to Mozambique](https://www.sigma-aquaculture.com/super-large-fish-tank-export-to-mozambique/): Photo case study of an oversized fish tank shipment exported to a fish farm in Mozambique.
- [Tilapia circular tank export to Ghana](https://www.sigma-aquaculture.com/tilapia-circular-tank-export-to-ghana/): Photo case study of a circular tilapia tank shipment supplied to a fish farm in Ghana.

## Company
- [About Us](https://www.sigma-aquaculture.com/about-us/): SIGMA Aquaculture SIGMA Aquaculture is a major brand of SIGMA INDUSTRIES CO.,LTD. Founded in 2015, is committed to aquaculture equipment processing and manufacturing.Existing production plant around 5000 square meters area, For welding of PVC fish ponds, and HDPE film production. Our company is located in shandong province in northern China, near the airport has Jinan
- [Contact Us](https://www.sigma-aquaculture.com/contact-us/)

## Other languages
Localized versions are hreflang-linked from the English pages. Localized entry points:
- Spanish (Español): [https://www.sigma-aquaculture.com/es/](https://www.sigma-aquaculture.com/es/) · blog [https://www.sigma-aquaculture.com/es/blog/](https://www.sigma-aquaculture.com/es/blog/)
- French (Français): [https://www.sigma-aquaculture.com/fr/](https://www.sigma-aquaculture.com/fr/) · blog [https://www.sigma-aquaculture.com/fr/blog/](https://www.sigma-aquaculture.com/fr/blog/)
- Arabic (العربية): [https://www.sigma-aquaculture.com/ar/](https://www.sigma-aquaculture.com/ar/) · blog [https://www.sigma-aquaculture.com/ar/blog/](https://www.sigma-aquaculture.com/ar/blog/)
- Portuguese (Português): [https://www.sigma-aquaculture.com/pt/](https://www.sigma-aquaculture.com/pt/) · blog [https://www.sigma-aquaculture.com/pt/blog/](https://www.sigma-aquaculture.com/pt/blog/)
- Indonesian (Bahasa Indonesia): [https://www.sigma-aquaculture.com/id/](https://www.sigma-aquaculture.com/id/) · blog [https://www.sigma-aquaculture.com/id/blog/](https://www.sigma-aquaculture.com/id/blog/)
- Thai (ไทย): [https://www.sigma-aquaculture.com/th/](https://www.sigma-aquaculture.com/th/) · blog [https://www.sigma-aquaculture.com/th/blog/](https://www.sigma-aquaculture.com/th/blog/)
- Russian (Русский): [https://www.sigma-aquaculture.com/ru/](https://www.sigma-aquaculture.com/ru/) · blog [https://www.sigma-aquaculture.com/ru/blog/](https://www.sigma-aquaculture.com/ru/blog/)
- Vietnamese (Tiếng Việt): [https://www.sigma-aquaculture.com/vi/](https://www.sigma-aquaculture.com/vi/) · blog [https://www.sigma-aquaculture.com/vi/blog/](https://www.sigma-aquaculture.com/vi/blog/)
- Simplified Chinese (简体中文): [https://www.sigma-aquaculture.com/zh/](https://www.sigma-aquaculture.com/zh/) (products; blog pending)