Hi guys! Im getting my first 15 gallon (ive kept 10s, a 20, a 5, and a 2.5), and need advice. What size sponge filter should I get, and should it be a double? I’m downgrading from my 20g that has a big air pump and a double sponge filter. Is that too big for a 15? I also have a normal sized sponge filter from my old 10. Do either of those work or should I get a specific filter? Id prefer to have a sponge. The stocking for the tank would be cherry shrimp (as they breed idk how many) neon tetras, and a docile female betta. I have lots of plants for it as well, and would do 40-50% water changes weekly and two filter cleanings a year.