PH refuses to go up!!

[TheReefGeek]

You are seeing ill effects on xenia at 7.9-8.0 Ph? I would not expect that.

What is the Ph of your top off water (before kalk)? What is the Ph of your water change water?

[Chin_Lee]

those numbers are fine and I wouldn't be too worried about it. many other reefers have the same ph numbers including myself. Although you may wish to verify that your ph probe is calibrated properly - otherwise, don't mess with the water chemistry. my 2 cents

[Hightower]

Top off water is kalk. PH is 12.3

Water changes is usually at 7.8

I use RODI water

[Jason McK]

Ya I wouldn't worry about those numbers. it is more important to keep PH steady (which out are) that getting it higher. 8.1 is a good number and a night number 7.9 is pretty good.
J

[Aquaholic]

Well maybe you should go with "if it ain't broke don't fix it".

I don't worry to much about the numbers as long as everthing is doing well, and i keep up with water changes.

[Beverly]

The parameters you list look fine to me, also. I would second the idea of calibrating the pH probe just to make sure it's functioning properly.

As for your xenia, it might be reacting to a change in water current. My xenia, and I have lots of it in my 120g, falls over if I change the direction of water flow or if I reduce velocity.

[Hightower]

Ok maybe I shouldnt worry so much, but my torch coral and xenia have recently all melted away. everything else is healthy.

PH probe is 4mo old and calibrated 2 weeks ago. I was sure that coral like to have ph in the 8.3 range.