i bought a clone off a friend first week into veg,ive had it here growing in my homemade bubbler system under a single 15w flor 2 inches above the plant, i use higro grow and bloom nutes i buy from work with hydroton, they do have lots of roots, ive checked that , im getting a hps next paycheck, employee discount, 600w hps for $200 is sweet, anyway ive had them here for about 3 weeks, they are growing and have come far sinse i bought them but ive been looking at some peoples grow journals and i see within the 18th day they are alot bigger and wayyy more flowers then mine now my question is why are they growing so damn slow, is it because my flor obviously doesnt give enough light or what?