Hi smart people,
I currently have three fishes which had marine velvet (according to your advice and looking at pictures) in a ten gallon QT with CopperSafe by Mardel (chelated copper sulfate it says).
In the sticky here about treating diseases, I read that I have to keep testing the levels of copper, but on the package of CopperSafe it says use 1 tsp/4 gallons, and that it treats for four weeks. Doesn't that mean just put it in once and forget it? There's nothing about testing or adding further doses later.
Or am I misunderstanding? Thanks!
The fishies all look perfect, by the way!