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Old 10-19-2005, 04:25 PM
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Natural sea water has a pH of 8.2. Anywhere between 8.1 - 8.4 is fine, though some minor fluctuations out of this range can also be acceptable.

Keeping alkalinity at 8 - 11 dKH will keep your pH in check. If you need info on alkalinity/chemistry, read up on Beverly's links, it's stuff you'll want to know.
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