Congratulations on your new boy! This is their mating time of year, so when he calls, he's hoping there is a nice little girl frog hanging around. Both my males call at different times of the day-though I could do without the 3 o'clock in the morning calls! I always take calling as a good sign-if he's going to the effort of looking for a mate, that means all his needs are being met.

Mine mostly poop in the water, but they do occassional soil other parts of their enclosure. Where I can, I simply remove it with a pair of tweezers. Because frogs can be very sensitive to poor conditions, I would do a complete clean at least every couple of months, if not once a month. Paul (NW Amphibian Rescue) might have a better idea on this.

Tripod looks very healthy and content, so I wouldn't worry too much. I think he knows how lucky he is! I hope you enjoy the little guy as much as I have enjoyed mine!