Ok let me clear the air....i have one of the hannas above that Txrooster has. And well its sucks ass. Sorry man, as you are a fellow member at cannibas.com, Im trying to look out for you. The calibration was always messing up and the read out would be sketchy sometimes. i have now upgraded to a oakton and let me tell you it is 100%better. And those soil ph meters that you buy a lowes sucks ass as well. Why test the soil ph? just check the run off like rooster said. peace
ps. and yes I have owned that rapist ph meter that you buy at hardware stores, so i am not just basing my opinion on BS.