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**TheOldSalt** · 03-10-2008, 07:35 AM

Why is it only 7.8?
It should be much higher in a new tank, since the saltmix has buffers in it to give you around 8.3 at the very start.
I would have to guess that your pH in this case isn't going to rise until you fix whatever dropped it so much & so quickly. This doesn't mean that you should go adding anything, either. You might have already added something you shouldn't have.

Low O2, high CO2, cavitation...
Hmmm... do you have any pumps that are pulling water instead of pushing it? Any kinked hoses? Any clogged filters? A too-tightly fitting lid? Any Liverock gone bad?

03-10-2008, 07:35 AM	#3
TheOldSalt Darth Ichthyos Join Date: Jan 2005 Posts: 4,361	Why is it only 7.8? It should be much higher in a new tank, since the saltmix has buffers in it to give you around 8.3 at the very start. I would have to guess that your pH in this case isn't going to rise until you fix whatever dropped it so much & so quickly. This doesn't mean that you should go adding anything, either. You might have already added something you shouldn't have. Low O2, high CO2, cavitation... Hmmm... do you have any pumps that are pulling water instead of pushing it? Any kinked hoses? Any clogged filters? A too-tightly fitting lid? Any Liverock gone bad? Last edited by TheOldSalt; 03-10-2008 at 07:39 AM.