Sponge Filter & Air Pump selection and size?

[ralf]

Hi
Im planing to set up a 30g hospital and... and... and tank,
I was going to select a Oxygen Plus Bio Filter 2 which is rated up to 30g
but ? how to size the air pump???

Please help me with some advice for the right sponge and pump selection

Ralf

[RandalB]

Ralf,
I always go double size with the sponges just in case. Any of the medium air pumps should be sufficient to drive a sponge filter.

HTH,
RandalB