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Old 04-09-2011, 08:48 PM   #1
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my sump design will it work ?

ok have drawn this plan up using two seperate tanks the display tank is 50g and both the sumps together is about 19g i'll be using two hob overflows

will it work ?

i have a couple of questions though will i need a bubble trap on the other inlet side of the refugium ?

do i need the check valve ?
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Old 04-09-2011, 09:43 PM   #2
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The concept is decent, but the mechanics might need a bit of work. It appears your plan is to push the 2 separate tanks together and let the one (fuge) overflow into the sump? I don't think this is a good idea, you'll get stray water everywhere.

I had an extremely similar design, but instead of just having the fuge overflow, I cut a hole and put a bulkhead in there, then used PVC to pipe it over to the sump inlet.
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Old 04-09-2011, 11:22 PM   #3
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sorry i should have pointed out more clearly that the two tanks join together where the two elbows come out of the first one next to the skimmer i'll alter the picture so it's more clear
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Old 04-09-2011, 11:31 PM   #4
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ahhh, now I see. so yeah, that would work. That's pretty similar to what I was trying to describe.
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Old 04-09-2011, 11:47 PM   #5
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cool thanks so do you think i need another bubble trap on the right hand side or can it drain right into the refugium ?
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Old 04-10-2011, 07:32 AM   #6
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Why have the expense of 2 overflows?you could use 1 and connect a T to route to the skimmer section and the fuge section,put a valve in the fuge section to adjust the flow to around 25%.Also on the 2 elbows make sure to add pipework down below the water level to help stop salt creep,splashes and moisture in your stand.if possible I would use a bubble trap at the fuge end too.Your bubble traps are the wrong way round,water entering the trap needs to start at the bottom not the top!! bubbles rise remember.
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Old 04-10-2011, 09:41 AM   #7
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Why have the expense of 2 overflows?you could use 1 and connect a T to route to the skimmer section and the fuge section,put a valve in the fuge section to adjust the flow to around 25%.Also on the 2 elbows make sure to add pipework down below the water level to help stop salt creep,splashes and moisture in your stand.if possible I would use a bubble trap at the fuge end too.Your bubble traps are the wrong way round,water entering the trap needs to start at the bottom not the top!! bubbles rise remember.

thanks for the info i thought i may have to put a bubble trap at the other end but was 100% sure

the idea of two overflows was for a bit of added safety i guess just in case one overflow got blocked for some reason then the other will still drain just as a backup

as for the bubble trap every one i have seen is an over, under, over configuration where the center baffle is higher than the two outside ones ??
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Old 04-10-2011, 11:20 AM   #8
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Yeah but by going over first you can drag bubbles through when flow is good,so under first eliminates this
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Old 04-10-2011, 11:27 PM   #9
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Ok thanks
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Old 04-11-2011, 02:05 PM   #10
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Also be aware that your return pump needs to be rated just below the overflow gph or throttle down to the overflow gph, so if you have 2 overflows and one does get blocked/loose syphon the remaining overflow won't be able to handle the gph.But to be honest as long as you have everything setup correctly one overflow will be enough,I use an 800gph overflow and have had no problems with it,as long as you keep the return pump filter clean the syphon should never have air accumulate in it.
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