When should I use a neck extension?

Nov 25, 2013
Aquarist wrote
Why do I need one? Should I raise the water level of the sump after adding one to my skimmer? Should I raise the water level inside the skimmer after adding the neck extension?
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Nov 25, 2013
Carlos Chacon wrote
You use a neck extension when you need to increase greater contact time with dissolved organics. This is an easy way to upgrade the performance of an existing Reef Octopus skimmer without having to purchase a new skimmer.

You should not raise the level of your sump or skimmer after adding a neck extension.