Barry..tank looks great!!..and yes you do still use the airline tubing..By the way, I also got rid of the funky little air adjuster/ valve , and got a decent little valve - the LFS. I just removed the sponge on the intake of the pump, too allow the pump to be mounted closer to the surface..Something else not to have to do maintenance on.. As for the micro bubbles, they kinda come and go. It seems to me they pop up more around when I'm feeding the fish or right after..It does get better with time it seems as well...