Where do I get a pH tester?

Can I get one at walmart/lowe's, etc? And how much should I be spending on one.

thanks

Depends on how acurate you want it and how your growing ie. soil, hydro. For soil you can get them pretty cheap at alot of store prob walmart and lowes. PH in soil is less of a concern it doesnt fluctuate as much or as fast as hydro unless you are really fertilizing a bunch which isnt good in itself. PH in hydro is something your going to want to test frequently sometimes twice a day. My PH can go up from 5.7 to 6.4 in a day sometimes. My PH tester was 100 dollars for the hydro and the soil it was uhmm...I cant remember but I think less than 10 dollars. With hydro you will probably want a PPM tester as well no 100% needed but makes life easier. That also cost about 100. Or you can buy the PH&PPM tester together which Im guessing is around 200.

I'm growing in soil... So I'll just ride by Lowe's and scoop one up... thanks alot for the help brotha'.