What would make a better 10 gallon tank? (with 2 tetra whisper PF10 filters)?

Alright, I would say for the bottom feeders, stick to the peaceful cory catfish (get about 2-3 the same size). And I would suggest maybe getting some mollies or platies as top swimmers because they are fairly peaceful if you pair 1 male with 1-2 females. I would also suggest maybe getting a snail if your tank tends to get algae pretty fast.