Hi yall! I just got my cascade 1200, it has 4 trays i can play with. I hope i get a ton of replies on this as i like to see how everyones set up is..... From bottom to top i have coarse and fine sponges in tray 1, then biomax with coarse sponge on top on tray 2, then bioballs in tray 3, and lastly some thick rock crushed coral with sponge on top as my last tray. Please be easy on me, im a newbie. Thx in advance!