First Hydro Grow 2 Clones 400w MH

So i tried this once before with soil and it didnt work out as well so im trying hydro, because ive seen it work for lot of my friends. I have two GDP clones set up in 2 drip ring hydro set ups.
My Setup:
400w MH at about 2 1/2 feet
5 gallon buckets with a waterfarm setup built onto it
the clones are sitting in 1 gallon pots with mesh bottoms
1 fan for circulation
and 1 1/2 tsp of botanicare pro blend nut




Any advice or things to look for would be greatly appreciated i should have pics up by tomorrow

So i got some pics of the two girls. I did have some yellowing but realised it could have been from the fact that the PH was too high. I got it at about 5.8 and its in hydro so i think they should be good. Is there anything else i should do any advice or words of wisedom would be appreciated.

heres the week two and i got problems i cant figure out whats wrong they wont grow and the leaves are curling anyone got any ideas.