That's the key to the Euro reef skimmer right thar
![Eek! :eek: :eek:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
I've looked at one running and wondered how the heck those bubbles came out so darn small.
Put that bubble factory on most any skimmer and you'll have a champ.
Goes back to the basic principle of a skimmer's production
1. Longer reaction time in water (height of skimmer) = better
2. Greatest amount of bubbles possible to react with = better
This pump takes number 2 above to another level and kicks rear.
I want one !!