Re: 6ft./150 gal first time Palu build...
if you use 250 watt mh you will be able to keep a wide variety of plants at different heights. the disadvantage is that they throw alot of heat. you will definately need to raise them and maybe even need to run a fan on them to keep the heat near the tank down. that is somewhat dependant on what you want to keep in the viv. my suggestion is before planting or buying any animals to cover the viv. and turn the lights on for 12 hours and see what happens to the tank. if you dont have the lights but were considering buying them i would consider looking into either a decent t5 system with good reflectors or even better a led system. keep us in on the build, thanks steve