Originally Posted by Emelinda76
Does anyone know the effect if it's too high?
No bad effect, as far as I know. I don't think it grows any faster. If you're dosing calcium to get it high, and not keeping watch on your alkalinity you can really mess things up. But if it's naturally high because that's the way your salt mix is, it should be just fine.
Normally... you can't have high calcium and high alkalinity at the same time. It's one or the other. If you have high calcium, your alkalinity levels will be lower. And vice versa.