Hello everyone. Just bought a male betta tonight because, well, I like bettas. I have a well established (cycled) 20 gallon FW tank. I have the betta right now in a one gallon disinfected sun tea jar. My question is - temporarily, since I am now seeding a new filter sponge with old beneficial bacterial from my established aquarium, could I just do some thing like weigh the new sponge down with with a rock, once it's seeded (and.how long should that.take.?), and slit a hole in the sponge and run an airstone through it powered by an external airpump ? Any help is appreciated. Thanks.