air driven sponge filters
Aquarium Solutions Bacto-Surge Sponge Filter 125gal
$22
Aquarium Solutions Bacto-Surge Sponge Filter 40gal
$9
Aquarium Solutions Bacto-Surge Sponge Filter 75gal
$11
Aquarium Solutions Mini Bacto-Surge Sponge Filter Kit 10gal
$7
Aquatop Classic Aqua Flow Sponge Filter 180gal
$27
Aquatop Classic Aqua Flow Sponge Filter 250gal
$38
Aquatop Classic Aqua Flow Sponge Filter 25gal
$10
Aquatop Classic Aqua Flow Sponge Filter 40gal
$13
Aquatop Classic Aqua Flow Sponge Filter 60gal
$15
I prefer the Aquatop
...we always have these in stock