Re:CO2 test kits

>From: "James P. Raasch" <jraasch at omnifest_uwm.edu>
>Date: Mon, 8 May 1995 08:43:35 -0500
>Subject: Re:CO2 test kits
>I have tested the following water samples with a Tetra CO2 test and got
>identical results: water from an aquarium which has CO2 injected at a rate of
>about one bubble (standard airline) per three seconds in a 55 gallon tank; a
>bucket of java fern (no fish, dim light for a month); and Milwaukee City tap
>water. All readings were at 15 ppm+. Should this be so? Are there any other
>test kits you recommend? I have measured hardness with aquarium pharm kit, but
>am not sure if it is measuring total hardness or DH. Can anyone help?

I had a similar experience with the Tetra CO2 kit.  I bought the LaMotte test
kit for about $14.  It gives CO2 in ppm which is a lot better than the Tetra
(even if the Tetra kit worked).
Mark A. Thompson - rrs0062 at ibm_net