I am just setting up a 6ft x 2ft x 2ft cichlid tank with sump and want to know what order to put the media in. I have pond brushes, gravel, filter wool and alphogrog. The first part of the sump has to grid shelves in it, the top one has the pond brushes on but can't put gravel on 2nd as it will fall straight through - someone suggested putting it in a bag for ease of cleaning but can't find anything suitable.

