This is my lil' shop....two MH 400w lamps during veg. full wrap around in mylar...temps at 77 deg F. and humidity at a steady 55%. I did a lil' over fert. but after a flush everything is back to standard. When I hit flowering I plan on running one of the MH and adding two HPS 400w which are sitting to the side. So, any advice...or what do ya think?