One negative I have yet to discover about keeping fish I just found out this morning. After a long night shift I came home and tried to let the dogs out for their morning business. The humidity is so high in here and the temp is so cold outside, my slider door was encased in ice and firmly frozen in place. It took me about 30 minutes to thaw it out. With hairdrier in hand, and a makeshift ice pick, I went ot work, but I was too late. Thinking we were locked in the house forever, both dogs looked at me sadly, and pee'd on the floor. What a way to sratrt your day.Merry Christmas Friends!Shawn Christian.