i have one that looks new but i dont know if i have everything i need. all i have is the filter, intake tube, the hob box and a basket in the media part. the basket has to sponges in it that are fitted to the filter so i know they are for it. but nothing on top of the sponges. there is likr 4 inch by 3 inch box of space there. is there filter pads for it or? i dont even know if the filter is worth investing money into are they good? i figured if anyone could help it would be you guys. thanks a lot.