If it's new, the protein skimmer will need time to break-in. Until that
time, discharging micro bubbles by the skimmer is perfectly normal. My
skimmer took about 2-3 weeks to fully break-in and stop producing bubbles.

-Todd

"Gottcha" wrote in message
...
found the problem...my protein skimmer was sucking air...but i tried
tightening it and not success.

"Gottcha" wrote in message
...
http://www.comp-connections.biz/tank/bubbles.jpg

Any idea what is causing this and what will stop it?