Too tall what should I do

[jer001]

There are only 5 plants

H=Hydro
C= Cana Coco
T=HydroTent
D = drip system
E = Everyone
E = indoor
E = canna coco
E = Tap Water
E = 6.5 ph
E = 4 months
E = Firtilizer Cal-Mag Plus, Bio-Genesis Synergy, FloraNova Grow
E = 400 Watt metal halide with a sun glo t5 48 on side
E = 75
E = 45 - 55 humitidy
E = 24 / 24
E = two oscilating fans and one small intake fan with portable air conditioner outside of tent