ph problems please help

[sandsifter]

I have a 75 gal reef with a sump and a pump that pumps 1500 gph. I have recently stopped dripping limewater and started using reef advantage calcium, reef builder, and marine buffer. My numbers look like this: Alk:10 dKH, Cal: 360ppm, salinity: 1.025. The problem is that my ph is staying around 7.7. After I add the marine buffer the ph will go up above 8 but it only stays for about a day. Should I just go back to dripping kalk? Any help would be greatly apprieciated.

 

[dogstar]

Bring the Cal. up to around 430 and see what happens..

 

[lion_crazz]

I agree with Dogstar, here.
You can test to see if it is oxygen that's causing your low pH by putting tank water in a bowl, aerating it for 2 hours (with an air stone or powerhead) and testing the pH in that bowl. If it is higher than 7.8, than your tank is not getting enough oxygen either.

 

[dejaco]

Try Kent Marine products - Turbo Calcium and SuperdKH buffer. Pre mix salt water with your mix but add about 1 tblspn of each, mix for 24 hrs, test, if ph calc & alk are where ya want it great if not keep adding until your new 5 gallons of mix are right where ya want them. Then every time ya do a water change you can mix the same! This works for me!

 

[poniegirl]

I agree, and that's a nice test for oxygenation..try your best to control the PH by finding the natural cause and curing it naturally. Additives can put you on a yo-yo cycle that'll make you crazy.