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11-30-2007, 02:55 PM#3
OPSenior Member
What about this pH pen/meter ?
Well I've found another pH tester: PH Meter Stick Wand Waterproof Hydroponics
I was just wandering, can I really use this pen for soil testing ?This is my new dream
My old dream
This is Only A Fiction, with some pictures directly from my mind via USB 3.0 !
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