Check the listing for details. FilterBoost Tablet Phosphate Remover 6 Tablets For Up To 200L/52.8Gal. Condition: New. Listed at 8.99 USD. FilterBoost Tablets for all Filter Media. Instantly activates new filter media, immediately release billions of filter bacteria. Rapidly removes phosphate from water. Reduce organic matter and eliminate precious odor from water. Simply insert semi-permeable packet into filter media it will slowly dissolve and release filter bacteria into tank promotes vitality of fishes. Every semi-permeable packets contains 3 tablets use for 100L/26 US Gal of water Simply insert packet in filter media it will do its work. Change packet or refresh tablets monthly to maintain phosphate level. Product contains: Phosphoric Bacteria, glucose, corn, soybean meal, flour, starch. Warning: NOT CONSUMABLE KEEP OUT OF REACH OF CHILDREN Avoid direct sunlight and keep in cool dry place for storage