PHYTO-FEAST® Concentrate (6oz.) – Reef Nutrition
A blend of the 5 marine microalgae most commonly used by universities and hatcheries for their superior nutritional value for aquaculturing marine species of all kinds: Pavlova, Isochrysis, Thalassiosira weissflogii, Tetraselmis, Nannochloropsis, and Synechococcus. Super-nutritious food for filter feeders including corals, Tridacnid clams, scallops, tunicates and zooplankton. Particle size: 1-15 microns.
Directions
If you have not used Phyto-Feast before, start with 1 drop per gallon each day (1 teaspoon per 100 gallons). Your animals will rapidly become accustomed to the phytoplankton (microalgae) and be able to feed on quite a bit more.
If your animals do not “clear” the water, reduce the dosage gradually and monitor water clarity over several days.
| Algae Type | Common Use |
|---|---|
| Pavlova | Filter feeders, corals |
| Isocrysis | Marine aquaculture, larval feeding |
| Thalassiosira weissflogii | Corals, tunicates |
| Tetraselmis | Scallops, zooplankton |
| Nannochloropsis | General marine nutrition |
| Synechococcus | Filter feeders, reef systems |
FAQ
What is the recommended starting dosage for new users?
Start with 1 drop per gallon each day, or 1 teaspoon per 100 gallons.
Can this product be used for all types of marine filter feeders?
Yes, it is suitable for corals, Tridacnid clams, scallops, tunicates, and zooplankton.
What is the particle size of the concentrate?
The particle size ranges from 1 to 15 microns.




Dorothy Ince –
Used Phyto-Feast for the first time last month. My corals started feeding within a week. Water clarity improved noticeably after a few weeks. The dosage instructions were clear and easy to follow. Great for reef keepers who want a reliable, natural food source.
Justin Parr –
My scallops were previously not feeding well. After adding Phyto-Feast at the recommended rate, they began to consume it regularly. The algae blend seems to support their health and growth. I’d recommend it to other reef hobbyists.
Claire Wallace –
This product has become a staple in my reef tank. The microalgae are easily visible and the animals respond positively. I’ve noticed better coloration in my corals and improved water clarity over time.