Quote:
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.
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+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
