I recently purchased a JBL CO2
Set Model "easy 1".
It is indeed easy to set up, but my problem is with the continuous CO2
/ pH tester supplied. This unit comprises a small plastic thimble that is half -filled with aquarium water (fresh), with a reagent then being added.
This thimble is then inverted, and immersed in the aquarium. I assume that the CO2
in the aquarium water is supposed to enter the thimble from below, and react with the water/reagent to change the colour.
The colour change that I'm getting indicates a high pH (which is actually neutral as verified using my test kit) and a high CO2
(which I cannot verify), but I've only got the gas flow set very low.
Does anyone have experience with the accuracy of these JBL permanent CO2
/ pH testers? Is there anyparticular location within the Aquarium (an Aqua-One AR620T) where I should place it?
Thanks - Neal