Problem with PH lately

[chrisarc]

IM currently running a 55 gallon reef which is about 7 months old. My KH is 8.96 according to my Salifert test kit. As of late my ph has been sitting around 7.8/7.9. I refuse to add any buffer to my tank because of a bad mistake I made in the past. I cant think of anything ive done differently latelty. Ive tried running an airstone in my fuge but to no avail. Oh yes I take my PH readings in the late afternoon. any help would be greatly appreciated.

 

[carshark]

anything died lately? even that you dont know of yet? look around could be the cause.. just curious, what mistake did you make in the past?

 

[chrisarc]

Nothing has died in the tank since Ive started.(lots of research)I added buffer to my tank once and I didnt like the reaction I got from my corals. Theres a problem somewhere and I dont think adding buffer will solve it. Buffer would bring my PH up but it will also raise my alkalinity which I dont want to do. I forgot to mention that I did add a hammer coral about 3 weeks ago. Could that be causing it.

 

[bobothewizard]

Maybe its time for a partial water change? When was the last time you did one?

 

[chrisarc]

10 gallon water changes once a week;religiously. I like to do a 5 gallon change on sat and a 5 gallon change on sun.Heres a pic of my reef

 

[chrisarc]

Any other poinions?

 

[ohiorn67]

well, I have had some of this issue, seems that a CO2 buildup could cause this to drop...I turned a powerhead up for more surface agitation..seemed to have worked. I already had agitation that seems more than enough, but this did help.....give it a shot!