I am a reseller for CoolIt and also a reviewer. Seeing as you can see some bubbles means you have the older version and not the new Freezone Elite. If you un-install the unit and movbe the air into the pump you can unscrew the plug and add some distilled water untill there is no more air in the lineds. I just joined here today, so thats why this is a late reply, and i have no idea if John or Sean from CoolIt have contacted you yet? You can reach me at my shops email address which is stanscustompcs@gmail.com