I use Red Sea NoPox daily. My 250 had issues with nitrates and phosphates for years. It took 6 months at dosing at the recommended amount to get my numbers down to 'normal' ranges. I still have to dose daily.
Only thing I didn't like at first was cloudy water, which makes sense since it is a binding agent so it would precipitate out of the water and clog the filter socks pretty quickly.
I was up to 35ml / day at my levels initially, now I am down to 10 ml / day to maintain. Works wonders really.
Vodka, vinegar just forms of carbon dosing, I find the NoPox was the better option over time (not as cheap as vinegar) but...
Overall I would say carbon dosing in general is highly effective but it takes a long time to really see numbers drop.
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130 Gal Community Planted Tank and a 250Gal Peninsula FOWLR
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