Wedding Cake, first indoor grow

I received the clones from a friend. They were just a few inches tall and potted in small pint size pots. I left them in those pots for the 1st week I had them and only at a window receiving outside light. At the end of that week they weren't much larger, but they looked much healthier. Only fed them tap water. During the second week of having the clones, I repotted them into the 5gal smart pots and into Fox Farms Ocean Forest soil. They were much too small for this large of a jump in pot size, but I went for it anyway. I also added the agrobrite lights above them. One light for every 2 plants, so four lights. I regulated the water at 1/4 gal per plant and fed them Fox Farms Big Bloom only. At the end of that week the clones were about 6-8" tall. I did not count either of those weeks as my "vegetation" weeks since I feel they were still clones/cuttings and needed attention. During the 3rd week of having them, I counted it as my 1st veg week, I watered with just tap water (room temp) on Sunday, 1/4gal per. On Tuesday I watered again but with all three nutrients listed and 1/4gal per plant. On Thursday I noticed a very minor case of nutrient burn and flushed them with just water, 1/2gal per plant. On Saturday I measured them and they stood at 12" tall. Only the FL lights were being used at this point. ***Using the Fox Farm feeding schedule for the most part and only Fox Farms nutrients