Red Sea RSK Skimmer 900 Protein Skimmer

#2
Would be ideal for either rear sump or high water level sump applications. Makes too much noise for my lower water level in cabinet sump.
 
#3
Looks like it's MSK 900 rather than RSK 900. Anyway, here's an excerpt from the Red Sea website about it:

The MSK 900 skimmer implements Red Sea
 
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