Interesting ideas 20 gallon tank?

[MoshJosh]

So I have two tanks, a 40 and a 20. The 40 is my SPS tank and the goal is growing acros as big and fast as possible. The 20 gallon. . . I don't know? I though about doing an anemone tank, but the anemones I like tend to be difficult to keep and I am sick of killing anemones and am hesitant to take any more out of the ocean to try (and very likely fail) again. So should I just make it another SPS tank? What would be an interesting idea or project for a 20 gallon tank? . . . I might just go back to SPS haha but want some ideas. . .

 

[Devaji]

my thoughts: ( in no order )
1. rare softie tank.
2. macro algae tank.
3. meat coral tank
4.LPS dom tank
5. cold water tank. ( prob not do able in that tank but there cool!)
6. dwarf octupus?? ( IDK much about this at all )
7. dwarf seahorse tank.
8. planted FW tank
9. aptisaisa farm for breeding nudies
10. SW shrimp tank.
11. garden ell tank.
12. zoa only garden tank.

thats off the top of my head.
man it makes we mant to set up another tank. I dont need any more have 2 but I do have a nice 18 gal. pen. AIO.. setting around.
must resist..