BioBalls and Water Level

[PineHill]

I was wondering what the difference was if the bioballs are only being dripped on, like I mostly read about, if they are partially submergered or if they are fully submerged.  Obviously they would have less contact to oxygen being under water (by about 20%), but what if there was an air stone underneath them?  just trying to brainstorm some ideas and any help, experience of advice would greatly be appreciated.  Thanks.

Chris

[BigDaddy]

Bioballs that are tricked on are part of what is referred to as a "wet/dry" filter.  Wet/dry filters are comparitively more effecient at biological filtration than filters that submerge the biomedia.

Unless you are very concerned that your filter isn't providing enough biofiltration, I wouldn't really spend much time worrying about it.