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Covey · 09-30-2005, 02:22 PM

WELCOME TO 3REEF!
Your right that is just a check valve to draw air out of the top out the U. It isn't wholly nessary because air never seem to build up but it does make it easier to prime. You just suck air out of it until it start working. I have had thing for 9 months now and it has NEVER lost it siphon.

09-30-2005, 02:22 PM	#22 (permalink)
Covey Scooter Blennie Join Date: Aug 2004 Location: Davenport IA Posts: 1,238 Karma: 361	Re: Nice Cheap DIY Overflow WELCOME TO 3REEF! Your right that is just a check valve to draw air out of the top out the U. It isn't wholly nessary because air never seem to build up but it does make it easier to prime. You just suck air out of it until it start working. I have had thing for 9 months now and it has NEVER lost it siphon. _________ My 150G http://www.3reef.com/forums/general-...nal-35612.html Member the Greater Iowa Reef Society http://www.greateriowareefsociety.com/