Found a guy on eBay who's going to build a 20L acrylic tank with a ventilated, removable divider (so the shrimp have full run of the aquarium).
I've been looking on the Internet but all I found had canopies. I hated the LED lights on my five gallons. Since they sit side-by-side, I bought two 10-gallon hinged hoods and a 36" Coralife T-5 fluorescent that spans both tanks. These will fit on a 20 long.
I need acrylic because it doesn't weight nearly as much as glass and it will sit on my end table.
I am so excited!