I plan on buying a rubbermaid foam tank to use as my sump. I have K1 media I plan on using as the bio filter. My question is what could i use for mechanical filtration and do you think there is anyway i could add a wet dry to it?
You've got a couple options as far as mechanical filtration goes. The easiest would probably be filter socks. You will just have to find a creative way to hang them. The other is using those plastic drawers (you can find them anywhere) and drill holes in them. First layer can be your mechanical filtration and the layers after can be wet/dry. Search "DIY wet/dry" and youll see some pretty good examples.