okay well you need some pics first off....but 1cm wat forums you been reading cause they got it fucked up 3 to 6 inch yes inches away from the plants you have burnt them you need a fan too how are your temps and 6 is to low for soil maybe 6 fo hydro but thats later in life ...get it up to 6.8 to 7.5 for soil will be fine or just water with bottled water and dont worry bout the ph .....but get a fan and move te lights up and you sound like you can water the right way butdiffrent strain require diffrent ammounts of water