Grow tent lighting question

Hey guys...been growing for quite a long time just utilizing an entire room for my hydroponic setup,but recently have moved to a smaller location which doesn't allow me to use as much space as i would like to. For this reason i have been really thinking abt using tents. 600 watt hps is my wattage of choice and all tht i have been using thus far. The question if i have a 6.5 x 6.5 tent will 2 600 watt hps be sufficient for the high quality dense buds im used to?. Any other tips or tricks related to tent growing also appreciated...thanks again guys.

A 400w will give you dense buds, two 600 watts will just increase yield. The dence buds come from HID lighting not the wattage, wattage increases yield.

The one 600 is plenty enough. Or you could go two 400's.