T5 or MH would be best for vegging. Both have their pros and cons: MH will give you a better light penetration, but will result in higher temps and a higher electricity bill. T5 will use less energy and make less heat, but just simply won't pack the punch that a MH can (This is coming from someone who uses a T5).How many inches can a clone grow in 2 weeks under a 1000W light on a 18/6 in soil. Would they grow the same amount under a 400w than they would under a 1000w?
What would be better lights to Veg under T5, MH, HPS or CFL's
Exactly..The 1000 watt will grow some monster but the 400 would be good.T5 or MH would be best for vegging. Both have their pros and cons: MH will give you a better light penetration, but will result in higher temps and a higher electricity bill. T5 will use less energy and make less heat, but just simply won't pack the punch that a MH can (This is coming from someone who uses a T5).