12-27-2004, 07:45 AM
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#12 (permalink)
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| Aiptasia Anemone
Join Date: May 2004 Location: San Diego, CA,California Age: 53
Posts: 577
Karma: 86
 
|  Re: Overflow Breaking Siphon
I hope this is helpful. I am using an overflow I made ala melevs.com and I drilled a hole in the top, glued in a 3/16 hard tube and attached an airline tube to the venturi of a MJ1200 in the tank. If the siphon breaks the MJ sucks the air out and I am back in business. I tested this with a poweroutage scenario and it worked fine.
Just as an aside I also have a vacuum shut off switch on my return pump so that if the level gets to high in the display tank (critters in the overflow) *it shuts off the return pump. It's the same switch that Birdlady is using for another purpose (Automatic Level Controller).
BTW the overflow cost about $15 to build and will run 800GPH. I've got a *Mag9.5 running as my return and the overflow is handling the output just fine. (4.5 head so the output is around 650-700)
Drew
_________ http://www.3reef.com/Photo_Album/dx7fd2/3Reef.jpg 80 gal plywood/glass reef tank, AquaC Urchin Pro w/Mag 3, 38gal Sump/refugium w/Mag9.5, 2 Maxi Jet 1200, 2-200 watt Hagen Heaters, 100lbs CaribSea Aragonite, 80lbs handmade Aragocrete rock, 2-110W 48" VHO Actinic Blue, 2-110W 48" VHO 50/50, RO/DI, DIY coiled denitrator, Bi-color Blenny, Damsel, Yellow Tang, red/green lobophyllia, zooanthid frag, cabbage coral, asst. mushrooms, toadstool leather, frogspawn |
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