thx guys. I looked online, and you're absolutely right. The leave in electrodes are way pricey. Thanks for the tip on the upper limit of TDS. Will get the sunleaves.

Thanks again
docky Reviewed by docky on . pH/TDS meter Been growing in dirt for a while, using chem indicators for pH and TDS. Worked well. Grew last batch in a drip/bubbler hybrid frighteningly similar to one of the systems I saw on the board recently. Anyway, using the chem indicators is a bear but the hydro results were superior even on my first try. What brand are you guys/gals using? Combined meter, or separate? Any models that you can simply leave in the resevoir, or are they too delicate? Thanks Rating: 5