Forget the SunSun. One of mine broke down after about a year and a half. Just replaced it with a Fluval 206.
I've been researching mini canisters for my 13g and the options look like a Zoo Med 501 and a TOM mini canister. Both have mixed reviews. So I'm undecided.
13g: Blue Velvet Love
, 20g: a 5 y/o girl's dream, 37g: will I ever
go pressurized?, 75g: silky magic
RAOK Club #64 and Nikon Pimp #75, baby!