My gecko seems active and always eats everything he's fed, but he doesn't poop that often. He has an under tank heater I got last week (yay) and a heat bulb that keeps the Tank around 85 degrees. My gecko poops but sometimes there can be four days between his defecations. He's on a mat, so I don't think he's impacted. Can somebody tell me if they're geckos are like this to ?