Review on API Goldfish Aquarium Cleaner: High-Quality 4-Ounce Bottle for Sparkling Tanks by Paul Romero

This stuff works and I wish I had bought it a long time ago. I had an empty fish tank so I bought 2 goldfish for my grandson not realizing the amount of work it takes to keep the water clean and odor free. I had to clean the aquarium twice a week, which harmed the fish and took a lot of time. After a single use, the water stayed clear and odorless for almost a week. Just make sure you use the measuring cap carefully or you could hurt your fish.