Id say get some fans in there 1st of all your branches are looking puny..
Second can u get ur t5â??s closer. From what i understand is the t5â??s dont gey very hot so id get them as close as i could...
Maybe even weed out some stragglers so your lights can work on the big girls
You have more plants in there then i have in my 1000w closet.
Id say kill the one with 2 leaves for sure... or put it outside
Id move/kill a few others two... or get alot more light