Hey guys, I need some help. Lilly is starting to get a bit of goop in her left eye, I think it's because I am using Carefresh and she is in an aquarium. I have never had a problem with any of my pets and Carefresh, but they have all been in well ventilated, wire cages and Lilly is in a 50 gallon aquarium to have her babies. I took out the Carefresh but what should I use now? I tried a towel, but she just burrowed until the towel was in a ball. The bottom is glass and I don't want the babies to be cold.. is there any safe way to weight down the towel?