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 Ok, so if I understand correctly, I can actually pipe the outlet upwards with a 90`? This seems counter-intuitive, given that the 90 would cause the outlet to not have open flow... so why the hell can't I just bury the skimmer underwater in my sump and pipe it straight through into my first section of baffles? 
 Sigh. Lol. I think I'm even more confused now...
 
 But thanks for the help. Obviously if your friend has the skimmer piped into the vertical with a 90 just after the outlet I could likely do the same thing. It looks like all I may need to do is put a tee so that it is open into regular atmosphere after the outlet, and I imagine as long as that tee opens below skimmer water level it would be fine...
 
 ...right? ha ha ha.
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