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Old 10-01-2011, 07:29 PM   #1
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PH, Calcium

What do you recommend to keep your ph and calcium good at the same time, or is there any hope? I get my calcium up where it should be and there goes the ph down to 7.5 or so. My corals are doing well they just aren't growing.
They have been the same size for months. Any ideas? I use IO Reef Crystals.

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Old 10-02-2011, 08:21 AM   #2
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pH anywhere between 7.8 - 8.5 and calcium around 380 - 450.
What is your salinity?
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Old 10-02-2011, 09:14 AM   #3
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I use reef crystals too.. make sure you keep an eye on your KH hardness / buffering capacity.. I've found mine likes to fall pretty quckly. keeping the salinity about 1.025 seems to help keep the levels stable. I barely have to add anything, except for the hardness.
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Old 10-02-2011, 02:28 PM   #4
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You need to keep check on your alk.Even with using instant ocean RC's and PWC every two weeks I still have to dose alk every two days because of the amount of corals and rock I have.Keep the Calcium and ALK levels in line and your ph will take care of itself.

Of course IMO and based on my tank.
Just agreeing with catmel
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Old 10-06-2011, 09:27 PM   #5
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gas exchange also raises ph. if you don't have enough surface agitation, this could be why the ph is low.
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