Copper treatment with Cupramine, How do I re-dose with water changes? :O

[Madmak]

Not sure on the number at the moment bit it's all about maintaining a concentration of copper at all times. I've always added to my change bucket, tested, and dumped it in. Mark the bucket with "copper" so you don't use it for the DT.

[howdy20012002]

I would definitely recommend more than a 2 week treatment as well btw.
ick and marine velvet both have a longer cycle than that potentially.
I would personally go for a month just to be safe.