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On Sat, 15 Jan 2005 03:51:01 GMT, Marc Levenson
wrote: I drill it below the water line to avoid creating microbubbles at the return outlets. I've not experienced that. I get flow out of the hole. Nothing goes in. When I had the hole under the water line it kept getting clogged with green stuff. You can't beat the ripple on the surface, especially if you have halides!! kryppy wrote: If it is coming down the return line you can drill a small hole in it above the water line to break the syphon. Makes a nice ripple on top as well. The stupid check valves will always fail at some point. The hole can get clogged as well if it is not big enough. |
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