built a new degreasing tank. Basically a bathtub with a heating element on a thermostat. all the plumbing for the drain is plastic. And it has a water pump to keep things moving. I can fit about 8-10 deer and a bunch of bear in gallon bags. I was covering it in plastic to help hold temp and keep evaporation down. I only use dawn and water and once it was covered my antlers lost alot of their color and it seems like it all went right into the skulls. They were almost done until I covered it, and now the top half of each skull is solid grease and antlers are white. I know some of you guys have enclosed degreasing setups. Anyone ever see this before?