Blueberry muffin - 1st grow

In these first couple of days I've been watching the leafs closely. The clones were placed to root in a rockwool cube before being placed into the soil. The germination date is when they were cut off from their mother plants but they got home to me on March 7th but i didn't have all the stuff yet. They moved into the grow room on the 8th. I'm waiting to see some signals on the leaf - either bad or good ones - before I give them some additional nutrients. I'm also waiting a couple of days before adding bacteria and stuff, because I fear the clones will be overwhelmed with the new lights, being clones, this new soil and etc, so I'll take things slowly with them