It seems to be working on my 140 L tank. Took longer than a week to see the brown tinge of water. My Goldfish seems to be at ease than before. I have bought a bigger pack.
Verified purchase: Yes | Condition: New
After yeares of struggling with brown algae - whatever I did - this product has rendered my trank completely clean and clear. It not only looks beautiful now, but is staying that way! I can highly recommend this product.
Verified purchase: Yes | Condition: New
It taken my phosphate levels down to 0.2 and still going down
Verified purchase: Yes | Condition: New
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