There's no doubt the 400 watt switchable would be a good thing. I don't know what kind of space you're planning on, but one thing to consider, like Smiley sez.. ventilation and heat are going to be substantially more for the switchable than it will be for the t5s. I run a 600 watt switchable in my flower closet, but my veg area is a small cabinet and I could never handle the heat from an hid setup in there, so I run 2 65 watt cfl's and it keeps my youngsters, clones and a few mom's pretty happy... there's always stuff coming and going in the little cabinet, so it gets pretty busy. I've gotta make a decision on ditching a couple moms that I'm not sure if I want to keep the strain or not. Tough spot tho.. I won't know about the product for another month or so, so I've gotta figure out some sort of plan for that situation. It's all in what your situation can handle. If you're planning on having a 400 watt hid veg room, you flower room would have to be exponentially bigger and more powerful to accommodate the amount of stuff your veg/clone area will be able to produce.. it's a real juggling act..
You're on the right course.. keep pluggin and plannin!
mgk
Thanks! You can see above what I have to work with.
If heat is not considered is MH better than the same wattage of T5 for vegging purposes? Will I get stronger plants? Will it affect the size, or potency of the buds?