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CO2 indicators:

To: Aquatic Plants Digest <Aquatic-Plants at actwin_com>
Subject: CO2 indicators:
From: Thomas Barr <tcbiii at earthlink_net>
Date: Sun, 25 Feb 2001 19:50:56 -0800
User-Agent: Microsoft-Outlook-Express-Macintosh-Edition/5.02.2022

Riccia on a branch a stone etc. If it's got bubbles at least 1/2 the lighted
day then there's enough CO2. Heavy breathing fish, too much.
Rather than messing with that or a indicator kit etc, do the right thing.
Get a pH monitor like a pinpoint and see what you CO2 is really doing. It's
continuos accurate and the best way to see what your CO2 is doing. Cost more
but it's plain worth it. KH doesn't vary that much in most cases so all
that's left is pH. At a glance you'll know what's happening.
regards, 
Tom Barr

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