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Re: Co2 Dilemma

I am behind (18 days) on reading APD due to a Fish Show and college
finals in the same time frame, so sorry if someone has already given the
same solution to this problem.   When I had this  problem over a year
ago, I set up a air pump and an air stone with a timer to run only at
night when the lights were off.  This worked great when I needed it.  I
use the 2L bottle system and there is no shutting off at night.  JiM C.

Date: Tue, 28 Apr 1998 09:56:51 -0400
From: "Ken Guin" <kenguin at homemail_com>
Subject: Re: Co2 Dilemma

Olga wrote:

>Perhaps someone on the APD can help with this puzzle. Lately I have had

>unhappy fish in the morning due to high CO2 levels.


I have been having the same exact problems, so I hope you get a lot of
responses as to what could be causing this.

I know some people turn off their CO2 at night, but that supposedly
large swings in the pH, which, of course, is not recommended.  I have
a temporary "work-around" solution, which  evolves adjusting a filter
a little more toward the water surface. I know I am probably losing some

by doing this, but it keeps the fish from struggling.  My Kh and pH
also indicate a safe level of CO2 (so does my LaMotte CO2 test kit), but

would never know it from how the fish are behaving.  I am beginning to
believe it is more of an O2 deficiency than a CO2 surplus.

Any thoughts from the List would be much appreciated.


Ken Guin
Kenguin at homemail_com