Reef octopus nwb150

Yes, all skimmers go though a breakin period in which they will be a little erratic and also noisy. As the breakin period time goes by, it will start to settle down and quiet down as well.

Just time. Now, if you have added chemicals to your tank such as algaecide, red slime remover, stress coat, bacterial startups or done water changes using dechlorinator or water conditioner, then the skimmer will over bubble until those substances are completely removed from the water column.