Do you know what you plan to do with the high tank? I've seen some really interesting ones!
They're tricky to stock, but not impossible, and easier because it's a 20 high, not like, one of those 5-10 gallon high ones I've seen that are even harder to stock
I ask because I have a real yearning to get one of those impossibly shaped tanks, like a tall hexagon tank, and make a vertical aquascape for shrimp
Maybe like a soil wall climbing the back of the tank, with plants scaped into it so the shrimp can use the vertical space, perhaps with a slight waterfall at the top. Ahh, dream aquascapes!
So would be fun to see what you're planning to do with your tall one
