Seachem Reef Phytoplanktonis a concentrated blend of green and brown marine phytoplankton sized from 1 to 20 microns, the range that feeds the widest variety of reef filter feeders. It delivers essential fatty acids, proteins, amino acids, vitamins, and natural carotenoids that fuel soft coral growth and bring out richer color, with the added benefit of antioxidant activity. Browse our full fish food and nutrition range and the rest of the Seachem lineup.
What It Feeds
- Soft corals and other photosynthetic and filter-feeding corals
- Clams, feather dusters, sponges, and tunicates
- Copepods and other micro-fauna that support the reef food web
- A broad range of marine invertebrates thanks to the wide 1 to 20 micron size range
Why Reefers Use It
- Two phytoplankton types.Green and brown species cover a wider nutritional profile than a single strain.
- Natural carotenoids.A bioavailable pigment source that supports coral color and acts as an antioxidant.
- Wide particle range.1 to 20 microns feeds everything from corals to copepods.
- Shelf stable.Preserved so it holds up at room temperature, with refrigeration after opening for best results.
How to Use
Shake well before each use. Add 1 capful (5 mL) for every 200 litres (about 50 US gallons) twice a week, or as needed to support coral growth. Target feeding near corals and filter feeders with the pump off for a few minutes improves uptake. Start conservatively and increase only as your corals respond, since any food will add to the tank’s nutrient load if overdosed. Refrigerate after opening for the best shelf life.
Choose Your Size
| Size | Best for |
|---|---|
| 250 mL | nano and single reef tanks |
| 500 mL | larger reefs or frequent feeding |
Specifications
| Brand | Seachem |
| Type | Marine phytoplankton coral and invertebrate food |
| Contents | Green and brown phytoplankton with fatty acids, proteins, amino acids, vitamins, and carotenoids |
| Particle size | 1 to 20 microns |
| Feeds | Soft corals, filter feeders, clams, sponges, and micro-fauna |
| Form | Liquid |
| Water type | Reef and saltwater only |
| Dose | 1 capful (5 mL) per 200 L (about 50 gal), twice weekly |
| Storage | Refrigerate after opening for best results |
| Sizes | 250 mL, 500 mL |
Recommended Pairings
- Soft corals and reef livestock that benefit most from regular phytoplankton feeding.
- Reef additives and supplements to keep calcium, alkalinity, and trace elements in range.
- More fish and coral foods to round out your feeding routine.
- Saltwater livestock and supplies for the rest of your reef.
FAQ
What does Reef Phytoplankton feed?
It feeds soft corals, filter feeders such as clams and feather dusters, sponges, and the micro-fauna that support a healthy reef food web.
Do I have to refrigerate it?
Refrigeration is not required because the product is preserved, but keeping it cold after opening gives you the best shelf life.
How often should I feed it?
Twice a week is a good starting point. Adjust based on how your corals respond and your tank’s nutrient levels.
Will it cloud my water or raise nutrients?
Used at the recommended dose it is easy on water quality. As with any food, overdosing can raise nutrients, so start small and build up.
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