Please help!

This is what I use..some lights are off so can take pic..
pic 2 weighed in at 9 oz, but I know I will double with co2, and a few more side lights
The other are 4 125w 2700k bulbs in a 36x20 hood. I like this method because if I wish to, I can double deck the room, with 10 tubs on a rotating basis, about average 7 harvest per tub per year.. I'll need a bigger freezer..no hash*drool* I miss hash.

plant is slowly but noticeably growing again, however the yellowing is getting worse, plus there are now what looks like burn spots randomly on the leaves. here's some pics-