Easy reefs Easyphyt 25, Phytoplankton Culture Medium, 250 ml

Phytoplankton Culture Medium for Growing Your Own Live Feed

Easy reefs Easyphyt is a liquid growth medium built for hobbyists who want to culture their own phytoplankton instead of buying pre-made liquid or gel foods. The formula follows the classic Guillard F/2 recipe, a nutrient blend widely used to grow marine microalgae at small to medium scale.

Easyphyt supports culturing several common strains, including Tetraselmis, Nannochloropsis, Isochrysis, and Rhodomonas. It is not intended for diatoms like Phaeodactylum or Chaetoceros, which need a separate silicate-rich medium to grow well.

Key Features:

• Based on the Guillard F/2 formula, a proven standard for small-scale microalgae culture
• Supports multiple strains, so one bottle can serve several culture setups
• Compressible pouch collapses as you use it, keeping air out and preventing oxidation
• Shelf life does not shorten once you start using the pouch, unlike rigid bottles
• Available in 250ml and 1500ml sizes to match hobby or larger-scale culturing needs
• Simple dilution ratio makes dosing repeatable batch after batch

Ideal For:

• Reefers who want to grow their own live phytoplankton rather than buying ready-made liquid or gel food
• Hobbyists running a semi-continuous culture setup who need consistent, repeatable nutrient dosing
• Anyone maintaining multiple microalgae strains who wants one medium that works across several of them

Pro Tips:

• Keep it cool and dark. Store Easyphyt below 25°C (77°F) out of direct light. If your space runs hot in summer, move it to a climate-controlled room to protect the nutrient blend.
• Match the medium to your strain. Easyphyt works well for Tetraselmis, Nannochloropsis, Isochrysis, and Rhodomonas, but diatoms like Phaeodactylum need a separate silicate-rich medium to thrive.
• Dose smaller amounts for ongoing harvests. After your initial 5ml per liter dose gets a culture established, drop to 1ml per liter each time you do a partial harvest to keep a semi-continuous culture going.

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