Thank you all for the advice! I have several tanks that are empty at the moment so my mind is running rampant with ideas. My gf isn't thrilled with all the space the empty ones are taking up so i am attempting to do something worthwhile instead of just turning them into planters. So far my thoughts are to place a 10gallone on top of one side of the 20long leaving the set up horizontal, with the remaining portion covered by a screen lid which would allow for ventilation and also maintain great humidity. I have also thought of incorporating a false bottom using egg crate and hiding the filtration behind a smooth rock wall/waterfall feature