Ok guys loads of input thanks, my setup is a 1.2 x 2.4 x 2.0m tent, x2 600w duel spectrum aircool lights 8inch outake 6inch intake temps range from 21c off to 28c on and average RH of 47, tested my PH today as there getting there first feed, Tap water sits at 7.2 with light feed sits at 6.9 soil is plagron light mix and I got 18 variety strain grow. I think they will be fine just had abit of a ropey start, thanks again I will consider starting a journel, and will link it here if I can work it all out lol
p.s light are about .7m away and there first Feed was today some a+b and voodoo juice