Hi, 4 weeks into veg and they just wont take off, i have tried flushing them with just water to see if they would pick up..when i didnt water them for 24 hours the leaves raised a little, but only the plants at the bottom of the tables, using nft...biggest are about 10 inches and smallest are as small as 4...i gave them a boost of noots to 14 48 hours ago and stil nothing has happend, reduced the watering times to 4 times a day, ph is at 6, temp is at 94 degrees...the roots have hardly come out onto the matts either...not sure what the strain is either but there are 6 big bud in there and they seem to be worse than the others..any help much appreciated thanks.