Hasn’t seemed to make any difference at all. I even started with a water change after the water started getting green again. Now I need to do a water change anyway and the product didn’t even slow the green tint. As far as I’m concerned it hasn’t worked at all. Very disappointing because I am a user of Fluval products. Yes, I have checked to see if the UV unit is working..
Verified purchase: No
Fluval es una marca que reconozco y recomiendo…aparte de ser un producto innovador a buen pret!
Verified purchase: Yes | Condition: New
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