reefer gladness
Well-Known Member
Run alk in the 7-8dkh range for an SPS tank only if you are carbon dosing. If you aren't dosing carbon then 8.5 dkh is fine.
To answer your question, water changes would only lower alkalinity if the freshly mixed saltwater has lower alk than your display tank. Otherwise it will fall over time.
To answer your question, water changes would only lower alkalinity if the freshly mixed saltwater has lower alk than your display tank. Otherwise it will fall over time.