From Treating Water to Designing Water.
Closed-Loop RAS & Aquaponics via Shelltas Water OS
Traditional Recirculating Aquaculture Systems (RAS) and aquaponics are plagued by heavy water exchange costs, pathogen surges, and dependency on chemical disinfectants and antibiotics. Shelltas Water OS harnesses SeaFect natural artificial seawater to imbue water with autonomous self-stabilization, delivering zero water exchange, zero antibiotics, and sustainable food production.
Sustained zero-exchange water quality balance verified in 5-tank system.
Stimulates biological immunity without chemical dosing or UV irradiation.
Doubled sashimi edible shelf life from 2–3 days to 6 full days.
Featured startup at Blue Food London & oral paper at World Aquaculture Society.
Land-Based RAS System Architecture & Flow
Diagram of closed-loop RAS combining Water OS microbial nitrification and SeaFect mineral buffering.
Autonomous Water Circulation & Buffering Flow
Closed-loop biological system maintaining pristine aquatic water through natural marine minerals and microbial ecology.
Culture Tank
Eel, shrimp, medaka, chub, crab, abalone.
SeaFect Alkalinity Buffer
Replenishes alkalinity consumed by biological activity, preventing sharp pH drops.
Microbial Nitrogen Cycling
Synergy with microbiome prevents NH₃/NO₂⁻ buildup with ultra-low nitrate accumulation.
Clean Water Return
Purified mineral-rich water flows continuously back to culture tanks.
Culture Tank (Aquatic Ecosystem)
Fish (eel, medaka, pale chub, tropical fish), crustaceans (shrimp, mitten crab), and abalone inhabit the tank. Feeding produces ammonia and organic waste.
Mineral & Alkalinity Replenishment by SeaFect
Minerals derived from SeaFect are supplied to the water, replenishing alkalinity consumed by nitrification and biological activities. Suppressing abrupt pH fluctuations, it supports the maintenance of an aquatic environment conducive to the activity of aquatic organisms and microorganisms.
Microbial Nitrogen Cycling
The mineral environment formed and maintained by SeaFect interlocks with the microbiome established on filter media and substrates. Suppresses accumulation of nitrogen compounds such as ammonia and nitrite, stabilizing water quality. Extremely low accumulation of nitrate has been observed even under long-term operation, and nitrogen removal pathways including denitrification are currently being verified.
Clean Water Recirculation Loop
Mineral-rich clean water cycles back into culture tanks. Eliminates massive fresh water exchanges and expensive pharmaceuticals, maintaining biological balance.
The 4 Zeros: Transforming Conventional RAS
Moving away from forceful mechanical and chemical water treatments. By designing water quality naturally through marine minerals and microbial ecology, Water OS eliminates conventional CapEx burdens and biological disease risks.
01. Zero Water Exchange99% Water SavedEliminates daily 10–30% heavy water flushes. Enables sustainable closed-cycle aquaculture in arid, inland, and urban environments.
02. Zero AntibioticsAntibiotic-FreeProtects stock not via chemical dosing, but by fortifying mucosal barriers and innate immunity using SeaFect bio-minerals, preventing drug-resistant pathogens.
03. Zero Chemicals / BiocidespH 7.8–8.2 BufferEliminates chemical disinfectants and manual soda-ash buffering. Autonomous mineral dissolution maintains pH 7.8–8.2 and biological equilibrium.
04. Zero UV / Ozone EquipmentLower CapEx & OpExEliminates expensive UV irradiation lamps, ozone generators, and giant filters, dramatically reducing initial plant CapEx and ongoing electrical costs.
What is SeaFect Natural Artificial Seawater?
Proprietary formula compounding porous bio-calcium from upcycled shells with marine trace elements. Perfectly replicates natural seawater mineral balance while eliminating coastal viral contaminants and red-tide risks.
Empirically Validated Aquatic Species
Proven empirical stability across sensitive fish, molt-dependent crustaceans, and shell-forming bivalves.
Japanese Eel
Highly sensitive to ammonia. Synergistic nitrification and SeaFect buffer neutralize 99.9% ammonia, securing >98% survival without antibiotics.
Freshwater Shrimp (Numaebi)
Fragile freshwater shrimp vulnerable to water shifts. Ionized Ca²⁺ supports exoskeleton cuticle hardening, preventing molt failures and enabling breeding.
Medaka (Japanese Rice Fish)
Prevents pH crash mortality for fry and breeders. Autonomous mild-alkaline buffering increases egg yield and fry survival rates without water shifts.
Abalone & Shellfish
Upcycled scallop minerals provide bio-available Ca²⁺ for shell calcification, reducing abalone mortality in recirculating tanks.
Tropical Ornamental Fish
Eliminates water replacement osmotic shock and fin rot caused by acid dips. Instant ammonia breakdown maintains vivid coloration and vitality.
Oikawa (Pale Chub)
Riverine fish requiring high dissolved oxygen and clean water. Activated aerobic nitrifiers maintain crystal-clear, dynamic river-grade water.
Mokuzugani (Mitten Crab)
Prevents post-molt softening and limb loss. Rapid calcium intake accelerates carapace hardening, supporting dense closed-tank co-habitation.
Kuruma & Vannamei Prawns
Targeted for disease-prone marine prawns. Synthetic marine water enriched with SeaFect eliminates stress and allows antibiotic-free closed farming.
Aquaponics & Hydroponic Symbiosis with Water OS
Harnessing fish metabolic byproducts to nourish hydroponic crops while plants purify water back to fish tanks. Shelltas Water OS autonomously balances water chemistry, delivering pesticide-free and chemical-free dual food production.
Total Nitrogen & Ammonia Recycling
Nitrifying flora convert raw fish ammonia into plant-accessible nitrate nitrogen. Leafy greens, herbs, and tomatoes absorb nutrients and return cleansed water to tanks.
Preventing Acid Crashes & Mineral Supply
Prevents acidification crashes caused by nitrification while infusing bio-calcium and trace minerals, bolstering root architecture and photosynthesis.
Pesticide-Free & Antibiotic-Free Harmony
Overcomes the core dilemma where antibiotics wither crops and synthetic pesticides kill fish, achieving authentic certified organic quality.
Urban Vertical Farms & Extreme Environments
Zero external runoff and minimal make-up water make it ideal for urban commercial buildings, repurposed schools, desert outposts, and island micro-grids.
Seafood Cold-Chain Breakthrough: Extending Sashimi Shelf Life to 6 Days
Shelf-life limits determine the geographical boundary of fresh seafood logistics. SeaFect extends sardine sashimi preservation from 2–3 days to 6 full days.
Retains Premium Raw Sashimi Quality after 6 Days
Unlocks long-range domestic surface transit and international air/sea exports previously restricted by rapid freshness degradation.
Complies with national food distribution optimization programs, preventing origin discard waste while improving energy efficiency in cold chains.
Empirical Partnership with Singapore’s Aquaculture Innovation Centre (AIC)
In Singapore—a global epicenter for high-density tropical aquaculture—Shelltas collaborates with the Aquaculture Innovation Centre (AIC), supported by Enterprise Singapore and the Singapore Food Agency (SFA). This partnership evaluates SeaFect for closed recirculating systems (RAS), antibiotic-free prawn farming, and microbial nitrogen cycling under rigorous tropical conditions.
Aquaculture Innovation Centre (AIC) × Enterprise Singapore × Singapore Food Agency (SFA)
Vannamei Prawn Survival & Antibiotic-Free RAS
Providing pre-ionized bio-calcium, magnesium, and trace marine minerals for disease-sensitive Whiteleg shrimp (P. vannamei). Eliminates osmotic shock and molt deformities, validating dense closed farming without antibiotics.
Alkalinity Buffering & Nitrate Suppression
Autonomously replenishes alkalinity consumed by biological nitrification, preventing fatal pH crashes. Jointly investigating unique low nitrate accumulation phenomena and microbially-mediated denitrification pathways under long-term closed circulation.
National Resilience & Global Scaling
Directly aligned with Singapore’s national "30 by 30" food security strategy. Establishing a global technological benchmark for low-water closed farming scalable across Southeast Asia and resource-constrained regions worldwide.
From Terrestrial Food Crises to Sustainable Food on Mars
Amidst global seafood supply shortages, closed-loop aquaculture requiring minimal water input is a critical global infrastructure. Shelltas Water OS is designed for extreme resource-constrained environments on Earth and extraterrestrial closed ecological life-support systems (CELSS) on Mars.
Featured Start-up presenting Water OS and SeaFect to world-class aquaculture investors.
Scientific oral presentation accepted on autonomous water stabilization and zero-exchange trials.
Co-Creation & Paid Sample Inquiry
Connect with our team to request SeaFect paid evaluation samples, discuss joint R&D projects in agriculture, fisheries, sanitation, or novel materials compounding. We respond within two business days.