Wow. My sponge filtration system is actually a sponge. That I bought at my LFS.
I feel so cheap... With my square white... square. And I knew those were suction cups! But thanks. ;P
As for the underground filtration, is that really necessary? I can see the benefits, but I assume you would need two pumps, or a rather unique set-up of pipes to get going.
Also, do you really need the tubes for shrimp to breed? Because I have none and my shrimp aren't breeding.
Trained in EMS, I can save a person from death and/or injury. I cannot, however, save a man from his own stupidity.