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10/22/2017, 07:44 PM
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#1 |
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Grizzled & Cynical
 Join Date: Apr 2006
Location: Stamford, CT
Posts: 17,319
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Random Thoughts on a Closed Loop
Planning to have a Vectra-powered CL on my new tank, pushing through an oceans motion diverter via dual returns. But something occurred to me. Could I run dual Vectras, sharing the 1 1/2" suction, with each outputting into an independent 1" return? Maybe even set one to be anti synch with the other (not sure if that mode is available in the Vectra, will have to check). Will that work I wonder?
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Simon Got back into the hobby ..... planned to keep it simple ..... yeah, right ..... clearly I need a new plan! Pet peeve: anemones host clowns; clowns do not host anemones! Current Tank Info: 450 Reef; 120 refugium; 60 Frag Tank, 30 Introduction tank; multiple QTs |
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10/23/2017, 04:36 AM
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#2 |
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Team RC Member
 
Join Date: Sep 2003
Location: NY
Posts: 17,749
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Do the vectra pumps go down to zero? If so I bet you'll get back siphoning if they are out of sync. Actually, any time they're out of sync even a bit, the one set higher will be robbing some performance from the one set lower.
Even in sync there will be at least some minor reduction in performance since I am guessing the 1.5" intake isn't nearly big enough to avoid a pressure drop. No opportunity for a second intake? On the other hand, if you screened the return openings to keep livestock out, the back siphoning might be a really cool effect in terms of random motion in the tank.
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Inconveniencing marine life since 1992 "It is my personal belief that reef aquaria should be thriving communities of biodiversity, representative of their wild counterparts, and not merely collections of pretty specimens growing on tidy clean rock shelves covered in purple coralline algae." (Eric Borneman) |
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10/23/2017, 09:35 AM
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#3 |
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Grizzled & Cynical
Join Date: Apr 2006
Location: Stamford, CT
Posts: 17,319
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You can calibrate them so that they do not go down to zero, but your point was exactly what I was thinking about, whether the pump that was running higher would 'steal' from the one that was not.
Probably a hair-brained idea .... that introduces unnecessary complexity.
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Simon Got back into the hobby ..... planned to keep it simple ..... yeah, right ..... clearly I need a new plan! Pet peeve: anemones host clowns; clowns do not host anemones! Current Tank Info: 450 Reef; 120 refugium; 60 Frag Tank, 30 Introduction tank; multiple QTs Last edited by ca1ore; 10/23/2017 at 10:31 AM. |
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10/23/2017, 11:38 AM
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#4 |
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Occupy Reef Central
Join Date: Jun 2004
Location: Orbiting
Posts: 4,141
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It would still work, though. Might be kind of cool.
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Time flies like an arrow. Fruit flies like bananas. Current Tank Info: 78"x36"x27" acrylic, 6 Orphek Atlantik V3+ Compacts, MRC Orca Pro II w/washdown, CalcFeeder Pro AC3, Emperor Aquatics 80w UV, 80/20 aluminum stand, Vortech MP60's, Theiling Rollermat, GHL Profilux 3.1T EX, Kessil H380 |
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