This is much better for planted aquariums and never seeps into the water. Activated carbon can sometimes leach phosphate back into the water, which can lead to algae outbreaks. Because it never leaches anything back into your water, you can always use it as a substrate or additional biomedium when it stops absorbing.
12 Count Greenpro Root Tabs Fertilizer Tablets: Ideal For Aquariums, Ponds & Water Gardens!
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Tetra AquaSafe tap water treatment agent, 5 l
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