No I use tap and my ec is 2.7/ sometimes it will get as much as 3.4 but
grotek says the level should be at 2.9 just before the end of the veg period then it ranges from 2.5/2.6 then on week 7 if it is a 8 week finisher 1.3 that’s impossible to achieve using the
grotek a&b without the other supplements im doing about 2.5 same as i was the last 3 weeks which was according to the
grotek chart they seem to be sound but i have been told that sometimes it will still be bad for them but it will not seem to be at first my ec meter is okay i think it is reading about right using the dp using the right measurement of mls per litre so I am a bit fucked up on this one anyway im probably pushing the nutes but the plants are loving it and they look great
quick one for you brother when you ec your water
i use tap and it reads 0.7 do i have to subtract that from the end reading eg if I had a reading of 2.7 it would be 2.0..?