at three inches tall im assuming they have their first set of true leaves, what you want to do is add nutes (NPK and MICRO <--- make sure you add micro if using two part nutes). Add nutes at 1/4 the stregth of the recommend dosage of week one
so whatever nutes you are using look on the feeding schedule and whatever it says for week one use 1/4th of that, then in two weeks use 1/2, another one to two weeks later start week one feeding schedule as noted by your nute bottle.
and please add some h202, believe it or not, this stuff works miracles, it CAN help turn weak plants into champs...remember, i said CAN...buy that brown bottle h202 from any drug store, just make sure on the back it doesn't state that there are any additives to the solution.
I added some h202 to my babes who just went through a nute deficiency and they perked up after the day after adding h202, day 2 was even more surprising, i can't wait to go home and see how they are today
