Coppersafe dosage

[marcwjj]

I use 12ml for my 10gal qt and end up right at 2ppm. I dose 2ml in the am and 2ml in the pm for 3 days.

Second that! I dosed 15ml in my 10g tank and the hanna copper checker reads a concentration of 2.59ppm, which is a bit high for therapeutic level (1.5-2ppm)

If I have dosed 12ml, that would be pretty much close to 2.0ppm. This estimate is also inline with manufacture s recommended dosage which is 5ml/4gallon, or 12.5ml/10gallon.

My recommendation: don't blindly follow popular suggestions which seems to be 18ml/10 gallon from my reading on this forum. Measure it yourself or you risk of toxicating the fish with too high copper !!!