I have a veg cabnet with a 8 bulb t5 fixture. It works pretty good. I picked up a cool tube with a 400 watt ballast. I get tired of constantly adjusting the t5 fixture so its within 2 inches from the plants as they grow. I am thinking I could install that cool tube and it should work just as good or better without haveing to keep raising the light.
Whats your opinion on this? Will a cool tube cover the same area as a 4 foot fixture will? Will I see the same growth speed as well as close nodes or will they stretch more?