Help with ph

[Guinnesshead]

MY PH is 7.7 Alkalinity is 11 Calcium is 450 How do I raise the ph to at least 8? I have a 15 gal. reef tank with 2 clowns.

 

[Shirak]

Why do you want to raise it?

If you are determined to raise it you need to lower CO2 in the water by increasing aeration. Either there isn't enough in the tank or your house CO2 is contributing and increasing aeration within the tank won't help. If it's from in the house and you can't change the house CO2, you could run a fresh air line from outside to your skimmer air input. You could also run a refugium at night to help with the overnight low when the tank lights are off. Some people are able to dose kalkwasser to increase pH but that can be tricky as it will change Alk and Ca too. Last resort.. CO2 scrubber.

That's why I have never measured pH in my 40yrs with reef tanks LOL

 

[Randy Holmes-Farley Verified Community Expert]

I agree that more fresh air to the room, tank, or skimmer is a good move. A CO2 scrubber on a skimmer can also help.