ok this is my first grow and its not going so well. at first every thing seemed perfect. i am growing hydroponically(rockwool) with florecents. at first i just fed with distilled water but now i began to fert with 10-10-10 once a week with the minimum dosage. just last week i began to notice yellowing form the veins of the new leaves. eventually it happends to the rest of the plant. please help. liberate me from this frustration!!!!!!