Is PH at 8.5 almost 8.6 high?

[jfingers8]

I have a 90 gallon sps dominant tank and i've noticed that some of my sps corals look mad. I just tested the PH with a hand held ph meter and it shows around 8.55. Lights been off for 2 hours. Is 8.5 almost 8.6 to high for sps?

 

[skibum9884]

I would say that's pretty high. I try and keep it in the 8-8.2 range, but don't have experience with it being that high.

What do others think?

 

[myzislow]

My pH spikes to ~8.5 at it's peak and I can't say I've noticed any adverse affects that I can attribute to having it that high.

 

[apt220]

I think corals are highly adaptable to pH. A gradual increase to that pH would not be detrimental, however a rapid increase to that pH would probably irritate them.

 

[cwegescheide]

If you haven't calibrated your pH monitor in the last 6 mos I'd do it and check the PH again. Those things can drift quite a bit in a fairly short period of time.

 

[saltn07]

I think its a little high, stability is the key. I believe a ph of 8.2 will hold more calcium...

 

[Logzor]

I have a 90 gallon sps dominant tank and i've noticed that some of my sps corals look mad. I just tested the PH with a hand held ph meter and it shows around 8.55. Lights been off for 2 hours. Is 8.5 almost 8.6 to high for sps?

No. 8.5x is not too high. See the pH articles in RC archives by Randy.

My ph runs at 8.58 every night when the windows are open. I keep telling people to tape over their pH reading. "Fixing" it tends to lead to major problems.

 

[jfingers8]

k thanks everyone

 

[fijiblue]

My pH spikes to ~8.5 at it's peak and I can't say I've noticed any adverse affects that I can attribute to having it that high.

My ph runs at 8.58 every night when the windows are open.

Luckies!!! I would love to have that PH!

 

[sowellj]

If it is stable I would not be overly concerned with it.

 

[joshrules123456]

mine runs at 8.6 thanks to kalk, before kalk, it was a contant 8.4, the corals dont seem to mind, Ive never heard of anything higher than 8.6, and wouldnt dare to try it.

 

[d0ughb0y]

Its high, but don't think it is dentrimental.
last summer I remember having crazy evaporation with fan on most of the time and getting a lot of kalk top off. I then modified my controller to switch to plain rodi top off when ph > 8.5.

 

[reefsic]

Your Golden...just be sure to monitor it and dont let it slip to far off!!!