hi lordsoth,if i were you i'd take the 150w down an let the 400w get on with it.save the 150 as a back up lamp,as if it get's as hot as you say i'ts a fire hazard!!!!aslo i think lamp's are a bit close together...don't want one of them poppin another fire hazard..the 400w i had did the job nice!only i moved house 2 year's ago, an got a bigger growroom now,so i been saving an got me a 600w..sweet.hope this help's...love an respect..spliffbuilder.
SPLIFFBUILDER Reviewed by SPLIFFBUILDER on . NEW light for me too Just got a new light yesterday, Sunleaves 400W HPS/MH switchable, it runs sooooo cool (ballast temp) it's unbelievable, in addition to running nice and cool it has the capability to have duct flanges added and air cool the ballast, I had not seen or heard of this before. The reflector is also from sunleaves, it's called the lightwave. The bulb I got is a regular HPS, Is the regular bulb ok? Any input appreciated. L0rdsOth :D Rating: 5