Your journey to a better aquarium begins today Professional Liquid Phosphate Remover 8 oz 4X Concentration Professional Liquid Phosphate Remover Free Shipping! 8 oz Treats 4000 gallons. Phosphate is required by all living organisms in small amounts. At higher concentrations, it can cause algae blooms and can stress corals, invertebrates and other sensitive creatures. This product safely removes phosphate from the aquarium. This lanthanum based phosphate remover permanently binds directly to phosphate. The phosphate is then easily removed from the aquarium with a fine mesh filter or protein skimmer. Instructions: First determine phosphate concentration using a reliable test kit. 5mL (the top line in the cap) will remove 1ppm of phosphate in 20 gallons. To maximize phosphate removal, add near the intake of the protein skimmer, or fine mesh filter. Do not add more than 5mL per 20 gallons of aquarium water daily. If phosphate concentration is above 1ppm, complete removal must be made over several daily doses. Adding too much, too quickly, can cause stress to some sensitive corals by too quickly lowering the concentration of phosphate. If stress is noticed in corals, decrease dosage by 50% until phosphate is 0. It is completely safe for freshwater and saltwater aquariums, and it can be used at several times its normal dosage without hurting delicate fish or invertebrates. Correct dosage is 5 ml or 1 tsp per 50 gallons of water. We ship out daily via USPS. Shipping Information All orders are shipped within 24 hours M-F. If you order later in the day on Friday or on Saturday or Sunday, your order will ship early Monday morning. Return Information If you are not 100% satisfied with your purchase, you can return the product and get a full refund or exchange the product for another one. You can return a product for up to 14 days from the date you purchased it. Any product you return must be in the same condition you received it and in the original packaging. On Mar-12-18 at 15:11:44 PDT, seller added the following information: