Alk low ph high not sure why

[Jonathan Troutt]

hey guys so doing my normal testing on my tank and my KH has been running 8 or 9 dkh and my PH has been stable at 8.0. Today though my KH is at 7 and my ph is 8.4-8.6.
Phosphates are near zero lower than .25 ammonia and nitrite are 0 nitrate is a 2. I just did a small water change last night 5 gallons 1.026 on salinity and my temp when I tested is 79.3

Should I be concerned I don’t have a lot of things in my tank currently. A RBTA a couple mushroom a small star polyp colony.

 

[Tautog]

No don’t worry. Retest Ph, that looks like a mistake.
KH between 7-8 is fine, make sure Ca and Mg are at 425 and 1350 respectively. To be honest, I haven’t checked my Ph since the first 6 months. Chase Alkalinity ! As close to 8.0 as possible. If your not dosing, start. All 3 need to be close, and stability will follow

 

[Jonathan Troutt]

Only reason I tested PH was I read that Dino’s can cause a ph drop. I hate the api ph test that is the only thing I have currently. salifert Ca is saying 470. Don’t have a magnesium kit yet it’s on the list tank is still a little new.