Yes, if your doing Hydro. If you feed by the tea/Tbl spoon and it's just a pour and mix grow. No.Was thinking of getting 1 is it really needed
Thx I'm going to order 1 along with new ph meter I want this 2nd grow to do better than the 1st grow lol
ThxYes a meter is important equipment right behind lights and environment control.
Some would say measure by EC, lots go by PPM.
Either that you choose to follow needs to be measured or you will end up with nute burn
or starving plants and chasing problems that look like something else. The $ you spend on a good meter will save $$ and time spent on chasing problems that can be avoided.