Pics posted!

You will have to keep us updated on the next attempt. Actually, betta fish don't really need a filter during breeding that I'm aware of. A tank with no gravel or substrate of any kind, and an almond leaf. This leaf conditions the water and provides somewhere for the male to make his bubble nest. You can add the filter later (with a very very fine sponge attached to the end!) but make sure the bottom of the tank is bare.