Hey what does everyone think for setup of sump? When I set my tank up 7 months ago I had it full of LR.. When doing maintenance I noticed a layer of brown junk/debri/detris/etc on the floor of the sump as well as stuck all over the LR, basically covering them so they looked dirty. I had a feeling that this was not good so I took out all the LR and now it is bare. I have yet to put anything back in the sump besides my equipment... I used a filter sock then and now which I replace every week or 2... what do you think caused this and does it matter having it empty or full of LR? I siphoned the sump and it looks pretty clean now and remain fairly good... nothing yet to make me feel worried like i need to clean... thanks