Hi, newbie here and my first post. Just purchased an Atman AT-3336 3-tray canister filter. Added media as follows:

Btm tray - Biohome
Middle Tray - 1-1/2" Coarse Black Sponge
Top Tray - 1/2" Coarse Black Sponge with white wool.

Pls advise if this arrangement is ok.

Thanks in advance.