Alkalinity and calcium question!?

cplatts32 · Dec 22, 2015

Wondering why my alkalinity level and ph is testing low but my calcium level is fine(480 ppm)?

My alkalinity is showing between 6 and 7. My ph swings between 7.6 to 7.8.

To my knowledge there's nothing to raise alk and ph without also raising calcium correct?? I don't want to OD calcium in my tank.

This may just be my paranoia, corals seem to be doing fine.. Although they seem to have slowed growth lately..

cplatts32 · Dec 22, 2015

Sorry I'm a bit of a newb when it comes to supplement maintaining and dosing..

twilliard · Dec 22, 2015

Add alkalinity and it will not raise your calcium
Will bring PH up a little

cplatts32 · Dec 22, 2015

Well that was simple... Lol. I feel stupid

Randy Holmes-Farley · Dec 22, 2015

Ordinary baking soda dissolved in fresh water is a fine way to go. Baking it first will give a pH boost as well, although that effect is mostly temporary.

This calculator shows how much to use:

http://reef.diesyst.com/chemcalc/chem_calc3.html