socom3riot
Well-Known Member
Im looking tester pen heres one im looking at: hydroponic supplies and equipment for hydroponic grow systems : Canadian Wholesale Hydroponics. 1 (877) 226-4769
Does this one check nutrient levels? if so , which one is it? EC? TDS? fuck man why cant they just say PPM?!
Also, it says auto calibration , does this mean I dont need that calibration liquid?
Does this one check nutrient levels? if so , which one is it? EC? TDS? fuck man why cant they just say PPM?!
Also, it says auto calibration , does this mean I dont need that calibration liquid?