Seachem Reef Phytoplankton – Premium Marine Nutrition for Filter Feeders

Feed Your Filter Feeders What the Ocean Would

Filter-feeding corals, clams, and invertebrates need a steady supply of live-quality nutrition, and a nutrient-poor tank leaves them dull, slow-growing, and struggling.

Reef Phytoplankton is a concentrated blend of nutrient-rich marine green and brown phytoplankton, supplying essential fatty acids, proteins, vitamins, amino acids, and natural carotenoids for optimal coral health and stunning coloration. With particle sizes from 1 to 20 μm, it feeds a broad spectrum of filter-feeding corals, clams, and marine invertebrates — no target feeding required.

Reef Phytoplankton comes from Seachem Laboratories, a chemistry- and science-driven company founded in 1979 in Madison, Georgia, where products are developed in-house rather than simply sourced and bottled. That approach shows in a phytoplankton blend engineered for a specific particle-size range and nutrient profile, and it is designed to work as the coral-nutrition component of Seachem's coordinated reef system — feeding filter feeders while the line's calcium, alkalinity, magnesium, and trace supplements maintain the water chemistry around them.

1. Shake well, then add 5 mL (one capful) per 50 gallons (200 liters) of aquarium water twice weekly or as needed.
2. Dose directly into your aquarium for optimal results — target feeding is not required.
3. Refrigerate after opening (recommended but not mandatory) and do not exceed the recommended dosage.

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Why Seachem Reef Phytoplankton

• Complete filter-feeder nutrition: supplies essential fatty acids, proteins, vitamins, amino acids, and natural carotenoids for coral health and coloration.
• Blended green and brown phytoplankton: a concentrated mix of marine green and brown phytoplankton rather than a single species, broadening the nutrition delivered.
• Broad particle-size range: particles from 1 to 20 μm feed a wide spectrum of filter feeders, so no target feeding is required.
• Part of Seachem's reef system: covers coral nutrition to complement the line's calcium, alkalinity, magnesium, and trace-element supplements.

Best For

Reef aquariums with filter-feeding inhabitants — non-photosynthetic and soft corals, clams, sponges, and other marine invertebrates — that rely on suspended planktonic food for growth, vitality, and color.

FAQ

Do I need to target feed? No. Its 1-20 μm particle range lets you dose directly into the aquarium and feed a broad spectrum of filter feeders — target feeding is not required.

How much and how often do I dose? Shake well, then add 5 mL (one capful) per 50 gallons (200 liters) twice weekly or as needed, and do not exceed the recommended dosage.

Is it reef-safe? Yes. It is a marine phytoplankton food formulated for reef aquariums; monitor your tank after introducing any new supplement to avoid parameter swings or unwanted algae growth.

What It Does

A concentrated blend of nutrient-rich marine green and brown phytoplankton offering essential fatty acids, proteins, vitamins, amino acids, and natural carotenoids crucial for optimal coral health and stunning coloration. With particle sizes ranging from 1 to 20 μm, it caters to a broad spectrum of filter-feeding corals, clams, and marine invertebrates, enhancing their natural growth and vitality.

Directions

Shake well before use. Add 5 mL (one capful) per 50 gallons (200 liters) of aquarium water twice weekly or as needed. Dose directly into your aquarium for optimal results—target feeding not required. Refrigeration after opening is recommended but not mandatory. Do not exceed recommended dosages. Monitor your aquarium closely after introducing any new supplement to prevent water parameter fluctuations or unwanted algae growth.