Today I broke my sump down (20 gallon rebbermaid) and cleaned it. I had a lot of "Crud" buildup in the sump and particulates floating in the water. The sump has one baffle with a large filter sponge at the base of it, a Remora skimmer, two 150 watt heaters, and the return pump. By the way, the addition of the baffle did an amazing job of minimizing microbubbles.
What I was wondering was this - am I removing helpful bacteria by doing this, or am I removing potential nitrate fodder, or some of both? I preverved both the large filter sponge and the sponge over the return pump by placing them in a bucket of water from the sump while I did the cleaning.
I did notice many small growths on the walls of the container, whith I no doubt killed in the rinsing of it. I also found a small pistol shrimp which I returned to the display tank.
Basically it seems my tank is healthy, was this a good move of a bad one?