API Stress Zyme+ Freshwater and Saltwater Aquarium Cleaner 8 fl oz

API Stress Zyme+ is a concentrated biological aquarium cleaner formulated to maintain a clean and balanced aquatic environment. Powered by active beneficial bacteria, it breaks down organic sludge, fish waste, and debris that accumulate in gravel and filter media. Regular use reduces aquarium maintenance and promotes a healthy biological filter in your tank. Suitable for both freshwater and saltwater setups, this 8 fl oz (237 ml) treatment cleans and conditions up to 470 U.S. gallons.