New and used products were used to treat my 240 gallon marine aquarium. Scanning the quality control strip on the back of the bottle will take you to Dr. Forwarded to Tim. The website contains a recommended treatment plan. First a bottle with new liquid was used, then waste treatment was started. When the retreat started, I also started turning off the lights for a few days. I have a piece of trash to do tomorrow. My headlights came on today and all I can say is wow what a difference. I've struggled with blue-green algae for a long time. I tried a few things and was very disappointed. So far I am very satisfied with the results. This tank has been in service for 8 years. It smells blue from an old tank that is 15 years old. I was ready to give up. The tank looks a lot better. Thanks!
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