surface skiming aquarium water

JaysonPRreef

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Can anyone tell me the meaning of the word surface skimming , and the diference between a overflow box and a elbow of 1".

Thnaks
 
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Chasing the Dream Giver, not the dream! Tonya
 
Surface skimming is using a device that just take water in from the top layer of the water column.
lg_21212_28576P.jpg


Overflow box is a device that allows water to go from the display tank to a sump.
CPR-CS90-Overflow-Box-1.jpg


90 Elbow is a piece of pvc piping.
611942124619.jpg
 

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