Here in north TX we just had a temperature swing from 97 to 50 in about three days, and these kinds of swings are typical for the area. admittedly, I forgot this before switching our tank from room temp to tropical stock, and now I'm concerned about keeping the temperature stable throughout the winter months. my husband and I live in an apartment, so improving the insulation for the room the tank is in isn't possible, so what other ways can you insulate an aquarium? tips for power outage or travel would be helpful too.