Use the National Geographic Water Maintenance Tablets weekly to maintain healthy water and fish. Eight tablets treat up to 80 gallons of water. The fast-dissolving tablets are easy to use and fact acting. Only at PetSmart.
Features: Fast dissolving tablets
Water Type: Freshwater
Tank Size: 8 tablets – treat up to 80 gallons
Weight: Net Wt. 1.3 oz (36.8 g)
Caution: Contains small parts. Keep out of reach of children. For aquarium use only. Not for use with fish raised for human consumption.
Add one tablet as needed for every 10 gallons (37.8 L) of aquarium water (break tablet in half for 5 gallons). For tanks 40 gallons or larger, and for soft or alkalinity water, dissolve tablets before adding to aquarium.