Actually, you don't want the hot side too hot. Nothing higher than 85 degrees for your hot spot, as blood's have a slower digestive process than most snakes and if your hot spot is too warm the rat may start to decompose in their stomach. Not a good thing.
More than likely it's just urates, these animals tend to really let things build up before they let it go. I rarely see our blacks pass urates or defecate between sheds.
Thanks I should have included the Temps i was referring to. I did dabble in Bloods before I turned to Ball's
My first Albino produced from a het to het Breeding