Freshwater Phytoplankton Culture Kit – 32oz Phyto 16oz F2 Fertilizer

DescriptionFreshwater Phyto Culture Kit (32oz F-2 Fertilizer)This kit brings home phytoplankton cultivation to freshwater systems, enabling sustainable feeding for daphnia, rotifers, and planktivorous fish. It includes 32oz of freshwater-cultured Tetraselmis phytoplankton and 16oz of Guillard’s F-2 fertilizer formula. While F-2 was originally formulated for marine species, it performs effectively in freshwater cultures when paired with osmotic adaptation protocols. One 16oz bottle fertilizes 8-10 liters of new freshwater culture through multiple reproduction cycles.Setup differs slightly from saltwater protocols: use dechlorinated water (essential for freshwater), reduce salinity stress by adding freshwater phyto starter at 20% new volume (higher than marine protocols), and maintain 72-74°F temperature range. LED lighting at 10,000 lux for 12 hours daily produces cell doubling every 48-72 hours. Expected yield: one liter of reproducing culture from a 200ml starter within 7-10 days. Culture lifespan extends indefinitely through serial feeding with F-2 supplementation every 3-5 days.Applications include feeding rotifer cultures, daphnia populations, and direct supplementation for fry rearing. Tank compatibility: all freshwater systems. Freshwater phyto sustains lower-oxygen environments than marine cultures; gentle aeration prevents settling stagnation. Paired with Freshwater Ecosystem Starter Pack, this kit creates multi-trophic feeding ecology for advanced freshwater breeding programs.Our team provides freshwater-specific culturing protocols with every kit. Contamination risk is lower in freshwater; standard container sterilization suffices.Phytoplankton Biology & Nutritional Profile: Our phytoplankton cultures contain cells ranging from 2-15 micrometers depending on species, with densities optimized for maximum nutritional delivery. Each cell is packed with amino acids, essential fatty acids (especially EPA and DHA), B vitamins, and pigments including chlorophyll and carotenoids. Cell division rates accelerate when nutrient conditions are maintained, allowing cultures to sustain feeding programs for extended periods. These microscopic plants are consumed by copepods, filter-feeding corals, clams, and invertebrates at impressive consumption rates—a single mandarin can consume 3,000-5,000 cells per day.Compatible Tank Types & Species:Reef Systems: Filter-feeding corals, clams, zoanthids, sponges, feather dustersCopepod Cultures: Primary food source; increases nauplii production ratesRefugium Programs: Sustained microbial food web; supports macroalgae nutrient cyclesNano Setups: Mandarin dragonfish, pipefish, seahorses, specialized planktivoresFreshwater Aquaculture: Daphnia, moina, larval fish rearing, zooplankton culturesStorage & Handling Recommendations: Keep cultures at 50-65°F for maximum shelf life (refrigerator recommended). For room-temperature storage, use within 10-14 days for optimal potency. Do not expose to direct sunlight. Shake bottles gently before use to ensure even distribution. If cloudiness develops, reduce dosing by half and allow water clarity to return. Cultures tolerate brief temperature fluctuations (48-78°F) but rapid changes stress organisms.Why Choose Our Cultures: I’ve been culturing these organisms for over a decade, and our commitment to quality is evident in every bottle. We test densities before shipping, ensuring you receive exactly what’s advertised. Unlike competitors, we never artificially dilute cultures—every milliliter contains the advertised organism count. Our feeding protocols use minimal additives, resulting in cleaner water and faster-reproducing populations. We personally use these same cultures in our demonstration systems, so we stand behind their performance. When you order from us, you’re supporting small-batch aquaculture rather than mass-production facilities.Frequently Asked QuestionsQ: Can I use saltwater phyto in freshwater cultures?A: Marine phyto experiences osmotic stress in freshwater. This kit’s specialized freshwater strain prevents cell collapse and maintains culture viability.Q: How do I feed my daphnia cultures with this phyto?A: Dose 1-2 teaspoons daily per 5 gallons of daphnia culture. Reduce dosing if water becomes visibly turbid.You May Also LikeFW Phyto standalone — 16ozChlorella Culture KitF-2 Fertilizer standalone