Hey so im back getting ready to buy my setup lumatek 400w ballast hps/mh setup from igrowhydro.com. How many plants can I grow under a 400w setup 5 to 6 ? like really good yield 4 to 5 ? Also the MH bulb that comes with it should be good at 36,000 lumens to vegetate under ? like 5 to 6 plants ...