Description
Isochrysis is a golden-brown, non-motile microalga prized for its exceptionally high DHA and sterol content; making it ideal for culturing copepods, rotifers, bivalves, and larval fish. Its small cell size and rich nutritional profile support vibrant early-stage marine life and promote long-term system health. Grown under sterile, controlled conditions and shipped live; never stored or preserved; our Isochrysis starter culture is a trusted choice for hatcheries, reef tanks, and aquaculture setups.
Rich in DHA, essential fatty acids, and sterols
Excellent feed for copepods, rotifers, clams, and larval fish
Supports biodiversity and early development stages
Aids in nutrient recycling and water column stability
Shipped live and fresh; no additives; no preservatives
Ideal for dosing or as a base for scaling up your own cultures
T-Issochrysis Galbana: The Reef Enricher
T-Isochrysis galbana is a species of marine microalgae prized in aquaculture and reef keeping. Rich in essential fatty acids like DHA, it is an ideal live feed for filter-feeders, larval fish, and zooplankton. Its nutritional profile makes it a cornerstone species for reef health and vitality.
Reef Tank Nutrition
Packed with DHA-rich omega-3 fatty acids, proteins, and amino acids, Isochrysis provides superior nutrition for corals, clams, larval fish, and copepods. This boosts growth, color vibrancy, and overall reef health.
Oxygen Support
Like other phytoplankton, Isochrysis photosynthesizes, contributing to stable oxygen levels and pH balance in your aquarium. A steady supply helps reduce stress on livestock and supports a stable reef environment.
Food Chain Foundation
Isochrysis is a vital first link in the marine food chain, supporting copepods, rotifers, bivalves, and other filter-feeding organisms. By sustaining these populations, it indirectly supports fish and corals, helping your reef tank thrive naturally.
Growth Chart (T-Isochrysis Galbana)
A useful colour chart showing growth milestones specific to this strain of phytoplankton.
T-Isochrysis Culture Guide
Follow this comprehensive guide to successfully culture phytoplankton with precise volume calculations.
Culture Volume Calculator
Salinity Requirements
Maintain salinity between 1.020sg to 1.026sg.
Step-by-Step Culturing Guide
Sterilise all equipment including containers, pipettes, and measuring tools.
Mix the calculated amount of F2 medium with pre-mixed synthetic salt. Ensure proper salinity levels.
Add the calculated initial culture volume (20% of container volume) to your prepared medium. Work in sterile conditions to prevent contamination.
Provide continuous white lighting at 5500k using LED or fluorescent lights. Maintain 16-18hour photoperiod for optimal growth.
Maintain temperature between 18-22°C (64-72°F). Use temperature-controlled room for consistent conditions.
Provide gentle aeration to prevent settling and ensure nutrient distribution. Avoid excessive agitation.
Check culture daily for color changes and cell density, optionally using a Secchi Stick.
Harvest when culture reaches peak density (usually 7-14 days). Use immediately or store refrigerated for up to 1 week. Reserve 20% for next batch.
