1,i have a 400w grolux lamp for 6 plants is that 2 high cos its using loads of electric?

2,how long do i leave them on a 18/6 light cycle b4 putting them on a 12/12

3,ive just ordered a nutrient meter,how do i use it with vita gro nutrients?

i grow with hydroponics/rockwool

hope u guys can help me cos this is all new 2 me,cheers guys
sc0usa Reviewed by sc0usa on . 3 questions,can ne1 help? 1,i have a 400w grolux lamp for 6 plants is that 2 high cos its using loads of electric? 2,how long do i leave them on a 18/6 light cycle b4 putting them on a 12/12 3,ive just ordered a nutrient meter,how do i use it with vita gro nutrients? i grow with hydroponics/rockwool hope u guys can help me cos this is all new 2 me,cheers guys Rating: 5