Quote Originally Posted by hanayama
just some examples....

Sunleaves Soil pH Tester - Worm's Way
Sunleaves Soil pH Tester - Worm's


Electronic Soil Tester - Worm's Way
Electronic Soil Tester - Worm's Way

dont know how well they work...but there are cheap ones out there
maybe get a pen and the cheap probe( i think thats what im going to do next grow)
I've tried 2 similar products, same styles but different manufactuers. They work like crap don't even waste your time. The meters/needles never seem to move.