1st Time Grow in Cool Cab

Hey all... Ok to all who stayed with me through this thank you very much. Take a look at the pics. I am at 3 weeks now and I have had positive growth over the last 5 days since I drained the res. I think I probably cant save about 5 of them but all the others are growing again. I am at 18/6 light cycle now. I havent added any more nutes and my ppm is at about 650 now. My ph is about 5-6. The lights were too low for a day so i raised them to about 6 inches off the tips. Oh and I also have roots now. One thing though there are some small roots coming out of the sides of the plugs. Should I be concerned?

Please let me know if I should be doing something else as I do not want to lose them again

Hey all.
I started flowering about 10 days ago and I have a few problems.
1 I had to remove 6 plants due to lack of room. That is going to be something any of you who are thinking about this unit have to be prepared for.
2 I noticed that at least two of my remaining plants have all but stopped growing.
3 the leaves at the bottom of the plants don't seem to be getting any bigger. I think it may be a combination of water and lack of lighting reaching the bottoms.

I am going to post pics tomorrow so please give me some feedback.

LED's lack penetration, maybe toss a couple cfl's(cheap lowheat) in the mix to help under. Nice setup tho bro, can't wait to see some new pics- Both UFOs same nm? 630 660 reds?

iv'xx