API Goldfish Aquarium Cleaner 4oz

API« GOLDFISH AQUARIUM CLEANER helps to maintain a Goldfish tank the easy way. This product keeps gravel clean and removes organic sludge, working in a natural way to break down solid fish waste. It also helps reduce toxic ammonia and nitrite by boosting the biological filter in established aquariums. We recommend using this product with all water changes and weekly to maintain a clean and healthy environment. Ideal for Goldfish bowls and small tanks. Treats up to 178L.