Seachem Reef Phytoplankton 500 ml

Seachem Reef Phytoplankton is a concentrated blend of green and brown marine phytoplankton enhanced for bioavailability in reef tanks.

Reef Phytoplankton is a concentrated blend of green and brown marine phytoplankton designed to provide the essential fatty acids, proteins, vitamins, amino acids, with biological carotenoids for invertebrate diet. Size ranges from 1-20 m to feed a broad range of tropical marine aquarium filter feeders and invertebrates. Reef Phytoplankton contains a natural source of carotenoids which provides essential proteins as well as a more bioavailable source of pigmentation when compared to other natural sources and synthetic pigments. Carotenoids provide the extra benefit of antioxidant activity. In addition, Reef Phytoplankton is enhanced to increase the bioavailability of important nutrients such as proteins, lipids, B vitamins, and other organic pigments, thus, corals expend less energy to derive the nutritional benefit. It is blended to contain the proper ratio of fatty acids, carbohydrates, and proteins. Blending phytoplankton yields better nutritional value. Studies * show increased consumption of phytoplankton in filter feeders when using mixed cultures versus a single culture of phytoplankton. *Villa, B. Rico, Le Coz, J. R., Mingant, C., and Robert, R. (2006). Aquaculture. 256, 377-388. Sizes: 250 mL, 500 mL

Reef Phytoplankton is enhanced to increase the bioavailability of important nutrients such as proteins, lipids, B vitamins, and other organic pigments, thus, corals expend less energy to derive the nutritional benefit.

Shake well before using. Use 5 mL for every 50 gallons of water twice weekly or as required to maintain coral growth. (For reference purposes, the cap holds 5 mL.) Refrigeration after opening is recommended, but not required.

Ingredients: Water, Thalassiosira weissflogii, Isochrysis sp, Nannochloropsis, Protein Hydrolysates with carotenoids, Citric Acid, Carboxylic Acid, Methyl Paraben, Sodium Propionate

Feeding Guide

Add 5 mL for every 200 L (50 US gallons) twice a week, or as needed to keep coral growth up.

Disperse it through the tank rather than target-feeding individual corals — concentrated spot feeding can stress sensitive tissue. Turn the skimmer off for half an hour or so after dosing.

Particle size is 1–20 µm, which suits soft corals and the smaller filter feeders.

Freshness & Storage

Every batch we dispatch carries a minimum of 6 months' remaining shelf life. Store this product in a cool, dry place away from direct sunlight, with the cap or inner foil closed tightly after each use.

Returns & Replacement

Returns are accepted within 7 days of delivery, provided the item is unused and in its original packaging. Manufacturer-sealed items cannot be returned once the seal is broken, and sale-priced items are not refundable.

If your item arrives defective or damaged, message us on WhatsApp with your order number — or email us, if you would rather — and we will replace it. Approved replacements are delivered within 3 to 5 business days. Transit damage is covered by insurance on every shipment. If tracking shows delivered but nothing reached you, tell us within 72 hours, which is the reporting window Indian couriers allow. Damage caused during installation or use is not covered; replacement spares for such cases are chargeable.

Full terms are on our Cancellation & Returns page.