azoo sponge filters

[utiliy]

just got a few azoo sponge liters-how far from the bottom of the tank should they be? few inches? and how much air flow should there be?

[RyanH]

If you intend to use them strictly for biological filtration then you can put them pretty much wherever you like. Keep the airflow relatively low.

[Cosmo]

sounds like you ordered the model that sticks to the side w/ suction cups .. I used to use these and would try and position them so that the fish could eat off them from all angles.. roughly middle of the tank, half way up the side..
Jim