ok heres my crappy paint drawing
http://s319.photobucket.com/albums/mm449/acexxacer/?action=view¤t=Photo2-3-1.jpg&t=1250406922936
list of parts needed :
a tray- improvised or bought just make it fit in your box
a rubbermaid- for the resevroir
a pump- walmart for about $10
some...