i have fitted an extra air pump...but it is producing too many bubbles for my liking...can anyone tell me if i do need an air pump or not? i know it may sound stupid but without it the only bubbles produced are those of the water falling down from the filter overhead
However, you can buy them at walmart for cheaper. It allows you to control how much air goes to your ornaments (and other air devices), to get them exactly as you like.