Thalassiosira weissflogii Phytoplankton Culture
Thalassiosira weissflogii Phytoplankton Culture
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Product Overview
Thalassiosira weissflogii is a premium live marine diatom phytoplankton known for its larger cell size and highly nutritious profile, making it a staple in aquaculture, research, and advanced reef systems. Unlike smaller green phytoplankton species, T. weissflogii provides a higher particle size and energy density that is especially beneficial for copepods, bivalves, and larval marine organisms that require more substantial nutrition.
This diatom is naturally rich in essential fatty acids, including EPA, and contains silica that supports healthy development and digestion in filter feeders and zooplankton. Its excellent palatability and digestibility promote strong feeding responses, improved copepod reproduction, and stable population growth. Cultured and shipped live for maximum viability, Thalassiosira weissflogii is an ideal choice for enriching live food chains and maintaining healthy, productive marine cultures.

Explore detailed care instructions, specifications, and policies below
Thalassiosira weissflogii provides meaningful benefits for reef aquaria by strengthening the natural food web rather than directly feeding corals. Its large, live diatom cells support healthy copepod and zooplankton populations, which in turn supply a continuous natural food source for corals, fish, and invertebrates. Filter feeders such as clams, sponges, and feather dusters readily utilize this phytoplankton, improving overall biodiversity and system balance. Rich in EPA and highly digestible, it promotes sustained copepod reproduction and population density while contributing to natural nutrient processing without causing sharp nutrient spikes, making it especially well suited for mature and biologically active reef systems.
Thalassiosira weissflogii provides meaningful benefits for reef aquaria by strengthening the natural food web rather than directly feeding corals. Its large, live diatom cells support healthy copepod and zooplankton populations, which in turn supply a continuous natural food source for corals, fish, and invertebrates. Filter feeders such as clams, sponges, and feather dusters readily utilize this phytoplankton, improving overall biodiversity and system balance. Rich in EPA and highly digestible, it promotes sustained copepod reproduction and population density while contributing to natural nutrient processing without causing sharp nutrient spikes, making it especially well suited for mature and biologically active reef systems.
Thalassiosira weissflogii is a large-cell marine diatom valued for its dense nutritional profile and strong feeding response across a wide range of marine organisms. Naturally rich in EPA and other essential fatty acids, it supports copepod growth and reproduction while indirectly benefiting corals and invertebrates through a strengthened food web. Its silica-based cell structure improves digestibility and utilization by filter feeders and zooplankton, making it an effective and reliable live phytoplankton species for mature reef aquaria and aquaculture systems.
Thalassiosira weissflogii is a large-cell marine diatom valued for its dense nutritional profile and strong feeding response across a wide range of marine organisms. Naturally rich in EPA and other essential fatty acids, it supports copepod growth and reproduction while indirectly benefiting corals and invertebrates through a strengthened food web. Its silica-based cell structure improves digestibility and utilization by filter feeders and zooplankton, making it an effective and reliable live phytoplankton species for mature reef aquaria and aquaculture systems.
Thalassiosira weissflogii offers a robust nutritional profile well suited for reef and aquaculture systems. As a marine diatom, it is naturally rich in essential fatty acids—particularly EPA—which play a critical role in copepod reproduction, larval development, and overall zooplankton health. Its larger cell size provides higher energy density per cell, making it more efficient for organisms that require substantial particulate nutrition. In addition, its silica-based cell structure contributes to balanced digestion and effective nutrient transfer through the food web, supporting long-term stability and biological performance in reef aquaria.
Thalassiosira weissflogii offers a robust nutritional profile well suited for reef and aquaculture systems. As a marine diatom, it is naturally rich in essential fatty acids—particularly EPA—which play a critical role in copepod reproduction, larval development, and overall zooplankton health. Its larger cell size provides higher energy density per cell, making it more efficient for organisms that require substantial particulate nutrition. In addition, its silica-based cell structure contributes to balanced digestion and effective nutrient transfer through the food web, supporting long-term stability and biological performance in reef aquaria.
Dosing: Shake bottle vigorously before use to redistribute settled cells. Add directly to refugium, sump, or display tank during low-flow periods.
Refugium Addition: Dose near copepod populations for direct feeding. Daily dosing supports robust copepod reproduction and growth.
Display Tank: Broadcast dose in evening hours. Water may show green tint that clears within 4-8 hours as organisms consume cells.
Recommended Dosage: Start with 10-15ml per 25 gallons daily. Adjust based on copepod density and filter feeder populations. Higher doses (30-40ml per 25 gallons) for systems with dense copepod cultures.
Breeding Systems: Dose 2-3 times daily for intensive rotifer and copepod production systems.
Dosing: Shake bottle vigorously before use to redistribute settled cells. Add directly to refugium, sump, or display tank during low-flow periods.
Refugium Addition: Dose near copepod populations for direct feeding. Daily dosing supports robust copepod reproduction and growth.
Display Tank: Broadcast dose in evening hours. Water may show green tint that clears within 4-8 hours as organisms consume cells.
Recommended Dosage: Start with 10-15ml per 25 gallons daily. Adjust based on copepod density and filter feeder populations. Higher doses (30-40ml per 25 gallons) for systems with dense copepod cultures.
Breeding Systems: Dose 2-3 times daily for intensive rotifer and copepod production systems.
Upon Arrival: Refrigerate immediately at 35-45°F. Shake vigorously before opening to redistribute cells.
Refrigerated Storage: Keeps for 3-5 weeks when properly refrigerated. Check for fresh, earthy smell and bright green coloration.
Viability Check: Healthy cultures appear bright green. Off smell, brown coloration, or clumping indicates declining viability.
Shake Before Use: Cells settle heavily—always shake vigorously to redistribute before dosing.
Avoid Freezing: Never freeze phytoplankton cultures as this destroys cell structure and nutritional value.
Upon Arrival: Refrigerate immediately at 35-45°F. Shake vigorously before opening to redistribute cells.
Refrigerated Storage: Keeps for 3-5 weeks when properly refrigerated. Check for fresh, earthy smell and bright green coloration.
Viability Check: Healthy cultures appear bright green. Off smell, brown coloration, or clumping indicates declining viability.
Shake Before Use: Cells settle heavily—always shake vigorously to redistribute before dosing.
Avoid Freezing: Never freeze phytoplankton cultures as this destroys cell structure and nutritional value.
All PodDrop phytoplankton cultures are guaranteed to arrive alive and viable. Our Tetraselmis chui is shipped fresh and concentrated for immediate use. If your culture arrives compromised (off smell, unusual color, or dead cells), contact us within 12 hours of delivery with photos for replacement or refund. We use insulated shipping to maintain culture viability during transit.
All PodDrop phytoplankton cultures are guaranteed to arrive alive and viable. Our Tetraselmis chui is shipped fresh and concentrated for immediate use. If your culture arrives compromised (off smell, unusual color, or dead cells), contact us within 12 hours of delivery with photos for replacement or refund. We use insulated shipping to maintain culture viability during transit.
Shipping: Monday-Wednesday via UPS 2nd Day Air for fast, reliable delivery. Arizona aquaculture license #91 ensures legal, biosecure cultures. Includes insulation and cold packs for temperature protection.
Weather Delays: We monitor conditions and may hold orders during extreme temperatures to ensure culture viability.
Returns: Live phytoplankton cannot be returned once shipped due to perishable nature. Contact us before shipping for order modifications.
Tracking: Confirmation email sent when your order ships with UPS tracking number.
Shipping: Monday-Wednesday via UPS 2nd Day Air for fast, reliable delivery. Arizona aquaculture license #91 ensures legal, biosecure cultures. Includes insulation and cold packs for temperature protection.
Weather Delays: We monitor conditions and may hold orders during extreme temperatures to ensure culture viability.
Returns: Live phytoplankton cannot be returned once shipped due to perishable nature. Contact us before shipping for order modifications.
Tracking: Confirmation email sent when your order ships with UPS tracking number.
PodDrop operates as a licensed Arizona aquaculture facility (AQ License #91) following strict biosecurity and handling protocols. Our Tetraselmis chui cultures are:
Raised in isolated, contamination-controlled systems
Free from harmful bacteria, parasites, and competing algae species
Packaged in food-grade, sealed containers for biosecurity
Shipped in compliance with USDA and state aquaculture regulations
Monoculture strains maintained for consistent quality and nutrition
Sustainably produced without environmental impact
Proper Handling: Refrigerate immediately upon arrival. Shake vigorously before each use. Never release culture water into natural waterways. Dispose of packaging responsibly.
PodDrop operates as a licensed Arizona aquaculture facility (AQ License #91) following strict biosecurity and handling protocols. Our Tetraselmis chui cultures are:
Raised in isolated, contamination-controlled systems
Free from harmful bacteria, parasites, and competing algae species
Packaged in food-grade, sealed containers for biosecurity
Shipped in compliance with USDA and state aquaculture regulations
Monoculture strains maintained for consistent quality and nutrition
Sustainably produced without environmental impact
Proper Handling: Refrigerate immediately upon arrival. Shake vigorously before each use. Never release culture water into natural waterways. Dispose of packaging responsibly.
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