Kh Test kit

[Scuba Guy]

Would someone recommend a Kh test kit suitable for determining CO2 concentration (I have the Ph meter) accurately.

Thanks

[jeffs99dime]

Aquarium Pharmaceuticals,inc. they sell a kit that tests both kh and gh. very accurate too. i use it also. Tetra also makes one, but i'm not sure how it is.-jeff

[cocoa_pleco]

I have the AP one like jeff said and its good