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jfinch View Drop Down
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Joined: March 06 2003
Location: Pleasant Grove
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Points: 7067 		Post Options Post Options   Thanks (0) Thanks(0)   Quote jfinch Quote  Post ReplyReply Direct Link To This Post Posted: August 26 2003 at 11:55am
Well, I can't see the kalk causing this problem. I think the culprit lies somewhere else. We must not be asking the right questions .
Jon

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Joined: July 09 2003
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Points: 186 		Post Options Post Options   Thanks (0) Thanks(0)   Quote scroll Quote  Post ReplyReply Direct Link To This Post Posted: August 26 2003 at 11:35pm
kalk would lower your ph. Right
just my 3 cents shy of a nickel. Ryan 897-2000

1 125 gallon reef
1 120 gallon reef tank and stand custom built by MSM
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jfinch View Drop Down
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Points: 7067 		Post Options Post Options   Thanks (0) Thanks(0)   Quote jfinch Quote  Post ReplyReply Direct Link To This Post Posted: August 27 2003 at 6:48am
Kalk has a pH raising effect generally speaking. In some tanks it doesn't have any effect (or so I'm told). In all my times using it, it's increased my average pH. Full strengh kalk has a pH close to 12. The alkalinity portion of kalk is OH- (read: high pH). This OH then reacts with dissolved CO2 to form the carbonates that we want:

OH + CO2 -> HCO3 and eventually H + CO3
Jon

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