Well went down the hydro shop, and he recomended this bio bizz + said it's good coz u don't have to ph the water. so i went 4 it. Now i started off with 30 white rhino and didn't worrie about the ph. Its a month into vegging and the plants r only 12" tall with a servier leaf deficency. They r yellow and some of the bottom leafs r diying.
I put this down 2 the ph. coz i have another 14 which r 2 weeks younger, no problems with them. I started ph'ing them when i noticed the 30 going wrong.
Today i had enough of the 30 white rhino + throw the worst of them away, now only got 14 of that lot.