Bring fresh, live microalgae nutrition to your reef with Reef Nutrition Phyto-Feast LIVE, a concentrated blend of marine phytoplankton designed to feed corals, clams, filter-feeding invertebrates and zooplankton.

Phyto-Feast LIVE is harvested and shipped fresh each week to maximize short-term cell viability. It contains a diverse blend of marine microalgae with particle sizes ranging from approximately 1–15 microns, providing a broad nutritional profile for reef organisms that naturally consume phytoplankton.

Why Phyto-Feast LIVE?

Live Marine Phytoplankton
Phyto-Feast LIVE is specially handled to maintain maximum short-term cell viability, with Reef Nutrition stating that more than 95% of cells are alive when bottled.

Diverse Microalgae Blend
Contains multiple marine microalgae species providing a variety of cell sizes and nutritional profiles.

Feed Corals & Filter Feeders
Excellent for many corals, Tridacnid clams, feather dusters, scallops, tunicates, zooplankton and other phytoplankton-feeding reef inhabitants.

Supports the Reef Food Web
Phyto-Feast LIVE can also provide nutrition for copepods and other zooplankton, helping support a more diverse reef ecosystem.

Small Particle Size
With particles approximately 1–15 microns, Phyto-Feast LIVE can be consumed by a wide range of filter-feeding organisms.

Available Sizes

16 oz – Great for established home reef aquariums and regular phytoplankton feeding.

32 oz – Ideal for larger systems, heavily stocked reefs, refugiums and reef keepers who feed phytoplankton frequently.

Feeding Directions

For aquariums new to Phyto-Feast LIVE, begin with approximately 1 drop per gallon per day, or about 1 teaspoon per 100 gallons.

Mature systems may consume approximately 1–5 drops per gallon daily, depending on livestock density and the aquarium's ability to process the added food.

For broadcast feeding, add Phyto-Feast LIVE to a high-flow area. Temporarily turning off the protein skimmer can help keep the phytoplankton available to livestock longer.

For target feeding, dilute 1 part Phyto-Feast LIVE with 4 parts aquarium water, mix thoroughly and target feed with circulation temporarily turned off.

Storage

Keep refrigerated at 33–42°F (1–5°C). Do not freeze.

Store in the coldest portion of the refrigerator rather than the refrigerator door.

Phyto-Feast LIVE has a manufacturer-stated best-by period of 3 months when properly stored.

Product Details

Brand: Reef Nutrition
Product: Phyto-Feast LIVE
Type: Live Marine Phytoplankton Concentrate
Available Sizes: 16 oz & 32 oz
Particle Size: 1–15 microns
For: Corals, Clams, Filter Feeders, Zooplankton & Reef Aquariums
Storage: Refrigeration Required

Why Buy From Infinity and Beyond Aquatics?

Infinity and Beyond Aquatics offers premium aquarium nutrition for reef keepers looking to support healthy fish, corals and complete reef ecosystems. Our Reef Nutrition collection includes live copepods, phytoplankton and specialized refrigerated marine foods for a diverse feeding program.

Live & Refrigerated Food Shipping

$15 Live & Refrigerated Food Shipping Fee Per Order

Phyto-Feast LIVE requires temperature-controlled handling during fulfillment. A $15 shipping fee applies to qualifying live and refrigerated food orders.

Live and refrigerated foods ship Monday through Wednesday via FedEx Express 2-Day Air to help maintain product quality and minimize weekend carrier delays.

Orders placed outside the shipping window may be held until the next available shipping day.

Refrigerate promptly upon delivery. Do not freeze.

Tracking information will be provided once your order ships.