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|  DIY closed loop system hey everyone i am gonna set up a closed loop on my 90 and am looking for some advice on how i should do it... as it is right now i have a bunch of half inch fitting that i'd like to use and am running a sedra 7000. what i am looking to find out is if i need to have ball valves on this unit or if i can get away without it. any info would be great thanks a bunch everyone in advance. terry 
				__________________ 4' custom tank all starfire. End overflow 2 AI sols reef keeper lite mp40wes Diablo skimmer Mag 12 return pump also feeding two reactors | 
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