So while browsing the great www, I came across a comment that said hard to spawn fish can spawn with great success while kept outside in the summer. I would love to do this with perhaps cpds or chili rasboras. I have a couple pots that may work, guessing about 7 gallons in size give or take. But we don't have an outdoor power source. I was looking at solar powered pumps, cheap ones that do not run at night. Can you fit a sponge over the intake or outtake, make it into a kind of filter? If there are only a handful of fish, will the daytime pump/filter and lots of plants be enough for them? And if yes to all that, any tips on a great way to raccoon proof a small round pond pot?