{"product_id":"seachem-reef-zooplankton","title":"Seachem Reef Zooplankton 250 mL and 500 mL — Concentrated Liquid Zooplankton for LPS and SPS Corals","description":"\u003cp\u003e\u003cstrong\u003eSeachem Reef Zooplankton\u003c\/strong\u003e is a concentrated liquid zooplankton made of microscopic animal prey (particle size 12.5 to 500 µm), formulated to feed LPS corals, SPS corals and other carnivorous organisms in marine reef aquariums. Where phytoplankton passively feeds filter feeders, zooplankton replicates the prey corals actively hunt in nature — protein-rich particles loaded with essential fatty acids, directly usable by polyps on contact with seawater.\u003c\/p\u003e\n\n\u003cp\u003eAvailable in \u003cstrong\u003e250 mL\u003c\/strong\u003e and \u003cstrong\u003e500 mL\u003c\/strong\u003e — pick your size right on this page.\u003c\/p\u003e\n\n\u003ch2\u003eThree Animal Prey Sources\u003c\/h2\u003e\n\n\u003cp\u003eReef Zooplankton contains a blend of:\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eArtemia (brine shrimp):\u003c\/strong\u003e nauplius crustaceans very rich in protein and fatty acids — a natural prey universally consumed by large-polyp LPS and SPS corals\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRotifers:\u003c\/strong\u003e very small micro-organisms (50–200 µm) — accessible to fine-polyp SPS corals and young specimens unable to capture larger prey\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEuphausia Pacifica (Pacific krill):\u003c\/strong\u003e a crustacean rich in omega-3 oils, astaxanthin and phospholipids — reinforces coloration and delivers high caloric density to support fast growth of calcifying tissue\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eThe formula is enriched with \u003cstrong\u003eastaxanthin\u003c\/strong\u003e — an antioxidant carotenoid that intensifies corals' natural pigments — and ascorbic acid for product stabilization.\u003c\/p\u003e\n\n\u003ch2\u003eWho Benefits from Reef Zooplankton\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLPS corals:\u003c\/strong\u003e favia, blastomussa, lobophyllia, trachyphyllia, goniopora — their large polyps actively capture zooplankton particles in the water column\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSPS corals:\u003c\/strong\u003e acropora, montipora, pocillopora — the small rotifers are directly accessible to their tiny polyps\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnemones and corallimorphs:\u003c\/strong\u003e discosoma, rhodactis — active consumers of animal prey\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMixed reefs:\u003c\/strong\u003e the ideal complement to a phytoplankton to cover the reef's full feeding spectrum\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSeachem's Official Feeding Protocol\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eShake well\u003c\/strong\u003e before each use — the product is particulate and settles to the bottom\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOfficial dose:\u003c\/strong\u003e 5 mL (1 cap) for every 190 L (50 US gallons) of water, \u003cstrong\u003etwice weekly\u003c\/strong\u003e or as required to maintain coral growth\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMethod:\u003c\/strong\u003e dose directly into the aquarium in an area of strong flow — Seachem states \u003cstrong\u003edo not target feed\u003c\/strong\u003e: the product is intended for blanket feeding only, and a direct jet can stress sensitive coral tissue\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStorage:\u003c\/strong\u003e refrigeration after opening is recommended by Seachem but not required — the product contains preserving agents\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eZooplankton + Phytoplankton — The Ideal Pairing\u003c\/h2\u003e\n\n\u003cp\u003eIn a natural reef, plankton is a constant mix of plant and animal particles. Alternating a phytoplankton like \u003ca href=\"\/en\/products\/phytoplankton-phyto-feast-2\"\u003ePhyto-Feast\u003c\/a\u003e (soft corals, filter feeders) with Reef Zooplankton (LPS, SPS, carnivores) replicates that diversity and covers the whole reef's nutritional needs. For fast-growing corals, \u003ca href=\"\/en\/products\/reef-roids-75g\"\u003eReef-Roids\u003c\/a\u003e round out the duo as a concentrated plankton food.\u003c\/p\u003e\n\n\u003ch2\u003eHow Long Each Size Lasts\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e500 mL:\u003c\/strong\u003e 100 doses of 5 mL — on a 190 L tank at the official 2x\/week rate, close to a year of feeding\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e250 mL:\u003c\/strong\u003e 50 doses — about 6 months at the same rate, the trial or nano size\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\n\n\u003ch3\u003eWhat is the official Reef Zooplankton dose?\u003c\/h3\u003e\n\u003cp\u003eSeachem states 5 mL (the cap holds exactly 5 mL) for every 190 L (50 US gallons) of water, twice weekly or as required to maintain coral growth.\u003c\/p\u003e\n\n\u003ch3\u003eDoes Reef Zooplankton need refrigeration?\u003c\/h3\u003e\n\u003cp\u003eSeachem recommends refrigeration after opening, but it is not required: the product contains preserving agents that keep it stable at room temperature.\u003c\/p\u003e\n\n\u003ch3\u003eCan I spot feed corals with this product?\u003c\/h3\u003e\n\u003cp\u003eNo — Seachem explicitly states the product is intended for blanket feeding only: disperse it into the flow rather than aiming at corals, as a direct jet can stress sensitive coral tissue.\u003c\/p\u003e","brand":"Seachem","offers":[{"title":"500 mL","offer_id":38010607206571,"sku":"20345","price":23.95,"currency_code":"CAD","in_stock":true},{"title":"250 mL","offer_id":47559954071723,"sku":"20344","price":17.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0513\/7108\/1899\/files\/lg_112389-2153334-center-1.jpg?v=1785874555","url":"https:\/\/reefsolution.com\/en\/products\/seachem-reef-zooplankton","provider":"Reef Solution","version":"1.0","type":"link"}