Function: Effectively address the yellowing of the fish tank
water (caused by the use of pigmented fish food or other
non-decomposable organic matter), green water problems
(too much fertilizer in the water and too strong light in the
Advantages: No need to change water. Ready to use.
Usage: Just put it in one of Potti's planting baskets, and the
results will be visible in about 3-4 days.