Originally Posted by murcos
This will too small for that many fish. I would suggest an additional tank, 20 gal
long if you can find it. Be sure you check water quality daily for ammonia (using Seachems kit) and nitrite. Do the appropriate (medicated) water changes as needed.
and am using Cupramine by Seachem. I am using the 1ml dose, then another 48hours later. Then half that dose
So 2 ml total or 2Â½? Have you tested the copper concentration to be sure it is at 0.5 mg
/l using the Seachem multitest copper kit?
With Cupramine I would go 21 days just to be sure, it is quite safe as long as it is tested regularly/daily. The main tank will need to remain fallow (fishless) for 6 weeks anyway.