I have 3 small/medium moss balls. I do not plan to put any other live plants in the tank. My filter is completly under water and moves the water well but it does not pump air into the water. The flow does disturb the top of the water line but not enough to make bubbles or noise. (I needed this set up to be completly scilent, which it is) this is a 10 gallon tank. I plan to stock with a dwarf Craw, snowball shrimp and maybe a school of very small top living fish like endlers or white clouds.