The ppm is a good place to start at, starting low and working upl
It takes the plant 3 days to let you know its doing good. I usualy run about 1500 that includes the background. I go for a 1/8 inch leaftip burn. That maximizes the TOTAL power. Cumming up to bloom I start backing it down to 1200 a week than 1000 over background
Background is what you get out of the tap water.
If at any time you plants look goofie/birnt flush the hell out of them and start over.
oldsanclem Reviewed by oldsanclem on . PPM levels? Ok so ive been reading up and down the cultivation section before i finish up my DWC set up and take off into the wonderful world of growing...one thing that i still seem to be having trouble grasping is the whole parts per million PPM thing. What is an average PPM for a 5 gallon DWC plant, what is too high too low etc? Also, what are some good meters to test? the local hydro store near me has a few, just wanted to get some more tips before investing. Rating: 5