how fast would a 400w hsp grow plants

how fast would my plants grow under 400w hsp ive got kalashnikova autos from green house seeds

About this fast ..............:

Seriously though, if they are autos then the time it takes to flower is already set. They will veg much better under a MH.

2-3 day, and posting the same fucking questions all over the boards will not make it faster

Well I had a plant once that was growing slow and I started 5 threads about it and then it totally blew up!

Maybe the answer is...start a couple more threads ? Or add a CFL