I've heard so much back an forth on what to use, UTH or Lamps, the argument seems to be (correct me if I'm wrong) that UTH's don't kill the humidity and are easy, Lamps on the other hand are more "natural" given the sun is what heats them during the day... So I have a lamp during the day that mimics the amount on sunlight outside and then whenever it turns off the UTH turns on during the night... i figure in nature they are heated by the sun during the day and the ground stays warm during the night but since substrate doesn't really hold heat I use the UTH... dunno how to do that with 5 tubs especially if they are stacked...

oh, and I always check the humidity so that the lamp doesn't let it get below 50-60%

but with the flexwatt I just have mine individually, i only have 1 BP... sorry bout the off-topic-ness at the top of the post