Recently I've been playing with different types of sump setups, the one I'm currently working on now incorporates a sand bed filter and a refugium. The water is pumped from the end of the sump back to the start. The refugium section today had a very odd clear incredibly smelly substance spreading on the surface of the sand. It looked like snot and smelled like left out in the sun for 3 days chicken livers to be honest.
Any ideas? :werd:
Any ideas? :werd: