I have no data. BUT, coarser bubbles will keep a bigger area open due to wave action. An air stone will need more maintenance than a rubber membrane disk.

Rubber - shut off air, scrub with mild scotchbrite pad or dish cleaning pad, drop down, turn air back on.

Air stone - I think of bleach or acid to clean the pores.


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3/4 to 1 1/4 ac pond LMB, SMB, PS, BG, RES, CC, YP, Bardello BG, (RBT & Blue Tilapia - seasonal).