Does anyone know what this is? I left town for a long weekend and came back to multiple spots around the tank.
This is a newish tank (got wet around December). I'm also battling dinos by trying to feed more and raise nutrient levels. Planning on adding a uv sterilizer at some point.
This is a newish tank (got wet around December). I'm also battling dinos by trying to feed more and raise nutrient levels. Planning on adding a uv sterilizer at some point.


