RO water would no doubt be a good thing to have but as long as PPM out of tap isn't out of site and people can actually drink it without growing extra body parts then tap should do you fine. In my opinion anything under 200ppm is usable. Mine runs around 120/130 and I raise it to 200 with calmag before adding anything else. As long as I can do what I have been doing with tap I'll stay with it, to me RO seems to be a pain and takes to long but if my water was up around 600 I would no doubt be singing a different tune :wtf:
tinytoon Reviewed by tinytoon on . 1st ebb/flow grow OK guys the day has finally come and I hooked everything up and jumping into the deep end of the hydro pool so to speak. I appreciate info from those that have help to this point. Not sure how it will work out but here goes. Specs of my grow: 1) 12 plants in my ebb / flow setup. 8 Super Lemon Haze and 4 OG Kush. All FEM plants 2) 600 watt (400 watt and two 90 watt LED's for later) 3) Grow tent 6x6x6 4) RO water and trying to keep it in the 5.6 to 5.9 PH range. PPM right now at 630 5) Rating: 5