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Da wiki inglese:
For a skimmer to function maximally, the following things must take place:
1. A large amount of air/water interface must be generated.
2. Organic molecules must be allowed to collect at the air/water interface.
3. The bubbles forming this air/water interface must come together to form a foam.
4. The water in the foam must partially drain without the bubbles popping prematurely.
5. The drained foam must be separated from the bulk water and discarded.
Also under considerable recent attention has been the general shape of a skimmer as well. In particular, much attention has been given to the introduction of cone shaped skimmer units. Originally designed by Klaus Jensen in 2004, the concept was founded on the principle that a conical body allows the foam to accumulate more steadily through a gently sloping transition. This reduces the overall turbulence, resulting in more efficient skimming. While research into the specific benefits of the design are still being measured, early reviews of many conical skimmers have been positive overall.[5]
Se da una parte lo skimmer cilindrico ha più volume interno la forma terminale squadrata chrea turbolenze che portano le bolle ad agglomerarsi. Ll conico dovrebbe avere il vantaggio di accompagnare dolcemente la schiuma verso l'alto.
Da quel che ho letto finora però, non cè nessuna prova che un sistema sia migliore dell'altro. Scelta di ogni singolo costruttore a questo punto
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