I don't think the bubbles will bother your pleco.
I've never had a problem with mine getting aggressive with my fish, and he shares the bottom of the tank with 5 khuli loaches. No one has ever picked on him either.
I might warn you though, if I don't give mine enough algae wafers he resorts to eating my plants which i am not a fan of. I'm not sure if rubbernose plecos have the same problem, mine is a marble sailfin. Just a heads up though.
I've never had a problem with mine getting aggressive with my fish, and he shares the bottom of the tank with 5 khuli loaches. No one has ever picked on him either.
I might warn you though, if I don't give mine enough algae wafers he resorts to eating my plants which i am not a fan of. I'm not sure if rubbernose plecos have the same problem, mine is a marble sailfin. Just a heads up though.