Ca low, but question about Alk

goody · Jul 25, 2012

I'm still getting used to my recent upgrade from 90g to 150g. I've also been adding a lot of sps. Have over 40 small frags to fist size colonies. I am getting decent growth, but just tested my Ca, using my HannaChecker and got 328. My Alk is 9.4dKh. I have been dosing 45ml of BRS 2 part each day.

I'm going to try and raise my Ca up to 420 over the next few days. My question is if I dose to raise my Ca 40-50ppm/day, how much more Alk will I have to dose to keep it right around 9-9.5dKh?

I do use NSW, but I'm going to be switching to mix within the next month.

ritter6788 · Jul 25, 2012

Honestly you'll have to test a lot and find your dosing schedule. There's no way for anyone to tell you for sure. I tested nearly everyday for two weeks to figure out my dosing pumps. Test, make small adjustments and test again.