should be fine! I WANT PICS OF THAT MAN! but its said its bad luck to have a fish tank in your room but this a pond so i guess this would be an exeption
anything is possible lol, but dont go with a de-humidifer, its just going to suck more water out of the pond, instead go with a bathroom fan that vents the air in your room up and out to the roof
i moved about 2 months ago i miss having my tanks in my room..had a 125 and 2 30s in my room wen at the rents house...now there all in the basement at the new house