UltraLife Blue Green Slime Stain Remover is a revolutionary time tested product, that will effectively and safely remove Blue Green Slime Stains from your freshwater aquarium. UltraLife Blue Green Slime Stain Remover contains natural cellular matter, select biological accelerators and special supplements proven effective in removing Blue Green Slime Stains while being safe for desirable macro-algae, nitrifying bacteria and fish. UltraLife BGSSR will accelerate the solubilization and biological digestion of organic solids. In the process, the oxygen uptake rate in your aquarium will increase as a result of this increased biological activity. It is very important that your aquarium is able to support this increased oxygen demand along with your aquatic life's need for oxygen. Therefore we recommend increasing your O2 levels by the addition of air-stones prior to and during treatment. For best results, DO NOT turn off UV Sterilizer. No need for Water changes or Removal of Carbon Filtration. Treats up to 150 Gallons (565 L) Net wt. .71 oz (20 grams) Contains NO ALGAECIDES OR ERYTHROMYCIN SUCCINATE. KEEP OUT OF THE REACH OF CHILDREN. FOR AQUARIUM USE ONLY . WARNING: MAY EFFECT PH, OXYGEN AND AMMONIA LEVELS.