I'm setting up a 5 gallon hex aquarium with a bio-wheel filter built into the hood. I had a few stocking options and I wondered if they would work. -2 neon dwarf rainbowfish and either 2-3 shrimp or a otto. -2 honey or dwarf gouramis and a otto -Would it be possible to keep 6 neon tetras or 6 panda cories. If any of you have any ideas please tell me.