I struggled with cloudy water in a turtle tank for several months and have tried all the products on the market. There were days I couldn't even see the turtles in the aquarium because the water was so polluted! Just in case I bought them at Walmart and put 4 in each of my 40 gallon tanks. After 3-4 days the water in both reservoirs became crystal clear. It's been 2 months now and I've treated the tanks 2 times in total. Both reservoirs are still crystal clear (see picture below). That is amazing. And the price is great! Just received my order from Amazon for 6 more boxes.
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