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#11
12-17-2008, 08:30 PM
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The greater the linear dimension of surface skimming you have the better you will be able to get laminar flow over the weir as opposed to pulling from beneath the surface for a given sump return pump flow rate (assuming your plumbing can accomodate the desired flow rate). More laminar flow over the weir ensures you're preferentially pulling the proteinacious film off the surface of the water.
So go with B and definitely don't go with one overflow unless it's coast-to-coast (or near cost-to-coast). I don't know how much room, if any, you have behind the tank but take a look at this site for a good overflow design (it's also a good site for others to get a handle on how to improve efficiency and safety in their overflow design): http://www.beananimal.com/projects/s...ow-system.aspx There is a thread in the DIY section of RC with more pictures and discussion if you're interested.
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SPS Dedicated 24x24x20 Trimless Tank | 20 g Sump | Bubbble King Mini 160 Protein Skimmer w/ Avast Swabbie | NP Biopellets in TLF Phosban Reactor | ATI Sunpower 6 x 24W T5HO Fixture | EcoTech Vortech MP20 | Modified Tunze Nanostream 6025 | Eheim 1260 Return Pump | GHL Profilux Standalone Doser dosing B-Ionic | Steel Frame Epoxy Coated Stand with Maple Panels embedded with Neodymium Magnets "Mens sana in corpore sano" Last edited by Canadian; 12-17-2008 at 08:36 PM. 
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