I noticed the bottom of my stand looked damp. Can't find a leak or a crack in either my DT or Sump. I did see that under my DT, directly above my sump there were droplets of water that looked like condensation or moisture build up. DT is dry outside the sump area. Floor is dry around the tank and I'm not losing any water in either tank. I saw this same problem a few weeks bags when we had hot/humid weather. After placing a window fan on the sump it dried up. Has anyone else had this happen? Does anyone run a fan inside their stand?