- Joined
- Mar 7, 2018
- Messages
- 43
- Reaction score
- 32
I think 15mlI have had my KH as high as 15ppm and the fish where fine but I would buy a good test kit and do a water charge 20% then test it I also acclimated my fish in a 10 gal thank for a week
Of that solution increases way more than 15ppm