Randy Holmes-Farley
Reef Chemist
View BadgesStaff member
Super Moderator
Excellence Award
Expert Contributor
Article Contributor
R2R Research
My Tank Thread
- Joined
- Sep 5, 2014
- Messages
- 67,349
- Reaction score
- 63,691
I forget what you are using for top off, but have you tested it for alkalinity?
if it is the rock, you may need to regularly add an alkalinity reducer until it stabilizes.
if it is the rock, you may need to regularly add an alkalinity reducer until it stabilizes.