who quarantines fish

[Alberta-newb]

Originally Posted by Aquattro

I may have typed something out long ago, but I use 20mg/l in tank, no carbon, no rock. After 7 days I change 50% water with new water containing 10mg/l. Lights off, it's photosensitive.

+1

Also turn off UV if you use it. General consensus is 40mg/gal for prophylactic QT or 80mg/gal for treatment of active ich/brook/velvet. 20mg/l is about 75mg/gal for those that like mixing units