Posted: Sat Sep 23, 2006 3:10 pm
If he's 1.5 inches now, he ideally should be in at least a 20-gallon, and if he's in that, it should be upgraded soon. (Those Rubbermaid or Sterilite storage tanks make good temporary homes.)
He needs a UVB light (regular UVB lights are flourescent, and the package specifically says they give off UVB rays) and a heat source, which can be a regular lightbulb. Try to mimic the seasons, a bit longer in the summer, a bit shorter in the winter, an average of 12 hours a day on is fine. The moon light won't do anything for him.
He probably likes to sit on the filter because of vibration from the motor. When he sits on the filter, is he out of the water? If so, it sounds like you have a low water level. You can increase it to give him more swimming space, but don't make it high enough for him to be able to escape.
"You become responsible, forever, for what you have tamed." -Antoine de Saint Exupery-