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Old 05/11/2006, 09:36 PM   #1
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i_am_blokeman's Avatar
Join Date: Jan 2006
Location: Perth, Western Australia
Posts: 80
Kh & Ph levels for a reef tank?

Hi Everyone!
Can anyone please tell me what the correct levels should be for my Kh and my Ph?? At this moment my Ph is 8.0 and my Kh is at 9.

Are these levels ok for fish and corals ??


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Old 05/11/2006, 09:40 PM   #2
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Join Date: Aug 2004
Location: Central CA, USA
Posts: 916
Those are both OK, but it would be nice to get the pH up a little. Kalkwasser drip is the easy answer. Remember that there are three legs to the pH tripod: Alkalinity, calcium and magnesium. Obviously, it's not quite THAT simple, but these are the three levels you'll want to watch. If you're able to keep calcium above 400ppm, you're doing OK. And you'll hear alkalinity (dKH) guidelines anywhere from 8-12 dKH. I prefer 11-ish. Magnesium should be 1250-1350ppm.

This space for rent.

Current Tank Info: 120g Mixed Reef. 2x250w HQI 14K, 4x39w T5HO. AquaEuro 400
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Old 05/11/2006, 10:00 PM   #3
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Join Date: Feb 2006
Location: St. Petersburg, FL
Posts: 1,258
you have the same thread over in New to the hobby


Current Tank Info: 75gal, LifeReef CLF1 Sump & SVS2-24 Skimmer
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