While still fretting over my co2 levels, I've been reading about ph testers and would like to get more accurate on that test, and possibly kh. Right now I use a tetra test kit that measures ph in .5 increments, and everytime I measure (unless right after a water change) I'm right on 6.5. I mean right on, never a noticable shade diference.

If I can spend over $50 on a digital meter that needs frequent calibaration and it's accuracy is still iffy, couldn't I spend that same $50 on a fabulous liquid test kit? I don't need the speed of digital, and I'm using no controllers - just low maintenence, steady co2 24/7.

I just got a cole parmer catalog in the mail that I'm going to look through tonight. Boy, that thing is a coackroach killer!