Red poison auto

Day 25 I had some issues in week 3 with this and my green poison fv, infact that one died completely. They had both fallen over numerous times. This is where recovery is. It was cold for the last week so I had her inside under some blue spectrum lights for 18 on 6 off. I am holding off on nutes for a few days see where she goes. I added more of the HollandBasics peatmoss after realizing maybe what I did wrong was I didn't mix it with water beforehand and it all settled more compact. Day 28- she's starting to look a little stronger, it's been cold so I have had her inside under blue spectrum lights, today I watered with 1ml bud juice nutes in about 250ml of 6.2 ph water.