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soulpatch · 03/02/2016, 09:05 AM

I believe the reason for the under going into the return section is more for bubble reduction then anything. Going over, under, over gives you 2 points of water going over a wall to cavitate and create bubbles. Going over once limits that and having that last wall that goes under negates most bubbles ESPECIALLY if you have something at the bottom of that area like media bag.

03/02/2016, 09:05 AM	#39
soulpatch Registered Member Join Date: Dec 2014 Location: Downingtown, PA Posts: 4,017	I believe the reason for the under going into the return section is more for bubble reduction then anything. Going over, under, over gives you 2 points of water going over a wall to cavitate and create bubbles. Going over once limits that and having that last wall that goes under negates most bubbles ESPECIALLY if you have something at the bottom of that area like media bag. __________________ 150 SC tank build: http://www.reefcentral.com/forums/showthread.php?t=2550948 Some have bar tabs. I have a coral tab at my LFS. Life goals.