Chronic low PH and inconsistent ALK

Proteus · #1 03-19-2012, 12:03 PM

Your ph is acceptable for the most part. But most Probable is co2 saturation. Your water may be turbulent but still might not be airated to pass that gas on.

Read this
http://reefkeeping.com/issues/2004-09/rhf/index.php

BlueTang<3 · #2 03-19-2012, 12:37 PM

Are you running the outlet from the ca reactor straight into the tank or through a effluent chamber? I had to get that big tube at the back of the tank to put more media to use up left over co2 as i was having ph issues also. I also run a hose outside for the skimmer intake and bring in fresh air seemed to help out lots.

Proteus · #3 03-19-2012, 12:54 PM

May help putting a couple 12 v fans in your cabinet for air
Movement also

Reef Supplies · #4 03-19-2012, 01:01 PM

That reading is more than fine, If you try to mess with it you will probably end up doing more harm than good. One of the most important "things" in reef keeping is stability...keeping things as constant as possible.

Aquattro · #5 03-19-2012, 01:10 PM

Quote:

Originally Posted by Reef Supplies

That reading is more than fine, If you try to mess with it you will probably end up doing more harm than good. One of the most important "things" in reef keeping is stability...keeping things as constant as possible.

That reading is also typical when using a Ca reactor, and not something to spend time thinking about. From experience, you will drive yourself nuts worrying about it, and probably not change it anyway. Toss the pH probe, you'll be a happier reefer

reefwars · #6 03-19-2012, 01:41 PM

Quote:

Originally Posted by Aquattro

That reading is also typical when using a Ca reactor, and not something to spend time thinking about. From experience, you will drive yourself nuts worrying about it, and probably not change it anyway. Toss the pH probe, you'll be a happier reefer

+1 on reactor and ph

Myka · #7 03-19-2012, 03:14 PM

You've been given lots of great advice. If you don't run through an effluent chamber it is not likely that you will be able to raise the pH. Fresh air might help a bit, but probably not much according to your outdoor testing. I also agree though that pH 7.9 isn't a big deal. I don't think your salt has anything to do with it either. Try an effluent chamber.

Could you expand on "my ALK drops out"? What number does it go from and to? How long does it take to change?

subman · #8 03-19-2012, 01:12 PM

I agree the readings are ok. I've seen the coral growth from pics and it seems everything is quite happy. Just sit back and enjoy.

waynemah · #9 03-19-2012, 07:21 PM

Quote:

Originally Posted by Titus99

May help putting a couple 12 v fans in your cabinet for air
Movement also

I run a dehumidifier most of the time with the sump doors open. This seems to have no effect on the PH. Unfortunately, I believe my house might be too air tight (previous owner went crazy with heat/cooling efficiency upgrades).

This might be a good idea anyways, it does get somewhat stale in there.