Replace 400 watt MH (454 watts) with:

• 4LT T5 HO (239W) ……...
  $aves 242 watts!
  Design Lumens: 25,200 MH vs 19,000 T5 HO
• 6LT T5 HO (360W)………
  $aves 94 watts!
  Design Lumens: 25,200 MH vs 28,500k T5 HO

Provide better lighting

• Higher Uniformity
  Higher CRI (T5 = 85CRI)