Tunze DOC skimmers - how do they work?

[honkit]

I just don't get it.

A Tunze DOC 9015 skimmer is rated to skim a 300+ gallon tank with a body which is no higher than 19 inches!

Isn't one of the pre-requisites of a good skimmer being the contact time of the micro bubbles in the reaction chamber? i.e. the longer the contact time, the better the skimmer performance and that's why other companies that make skimmers have taller and wider reaction chambers for their products to handle larger tanks.

Perhaps someone can explain this.

 

[rvitko]

Not necessarily true, in all actuallity really big reaction chambers with extreme turbulence result in proteins repeatedly being bound/ unbound/ seperated and may be no more effective then a much smaller unit. The trend is toward smaller skimmers with smaller finer bubbles and lower flow to get the proteins bound and floated out without the chance of them being unbound or torn apart. The DOC skimmers have a baffle inside and the actual reaction area is more like 24-30".