I googled this product and read a few threads from various forums and it seems like it can be hit or miss, the one that got me was a guy 3 1/2 months into trying out this product and then overnight his nitrates went off the charts, it took him three very large water changes just to bring them down to 20
ppm, so his conclusion after testing it out was that it may be a good product for getting your beneficial bacteria going but it's no substitution for water changes
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