Hello. I recently changed to BDBS in my 20 long. Before this I had white National Geographic sand. With it destritus, food, and whatnot sucked right up with a vacuum. The BDSD seems to cling to stuff more meaning water changes don't seem to be getting my tank as clean. Of course this could be because my tank is beginning to grow green algae all over EVERYTHING. My two nerites and one mystery can't eat it fast enough. What advice can you give me? I also plan to get a scrubber soon to start cleaning the inside walls at least on the front and sides myself. Probably will leave algae and biofilm on the back for the snails.