thanks i figured i can use tap with hydro,ive used it with soil.one more thing my clone just started rooting so i just put a cap full of nutes and one full of superthrive ppm is 500 and ph at 5.1 will i be ok
bluntman2006 Reviewed by bluntman2006 on . tap water ppm question tested some fresh tap water straight out of the faucet, ppm = 55. tried testing some tap water that has been sitting in a plastic bin for about 3 days, ppm = 75. does this make sense? shouldn't the ppm be going DOWN as chlorine and other chemicals evaporate from the water? also, considering it's city water, shouldn't the ppm be higher? read a lot of threads with people saying their water was a few hundred ppm straight out of the tap. will calmag plus be needed?? thanks! Rating: 5