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Old 06-20-2011, 10:32 PM   #1
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loc-line return lines?

im looking into the loc-line return lines and was wondering if the tool to connect ther are really needed? and also can this stuff be drilled for a anti siphon hole?
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Old 06-20-2011, 11:53 PM   #2
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The tool helps immensely, but if you have strong hands, you can snap the pieces together without it. Yes, you can drill an anti siphon hole in the locline.
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Old 06-21-2011, 12:49 AM   #3
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thanks for the info
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Old 06-23-2011, 03:53 AM   #4
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anti-siphon hole

I just put in loc line returns in my tank and am thinking this sounds like a good idea. Is it strongly advised to drill an anti-siphon hole or will a check valve in the return line suffice? What size hole is recommended and how far below the water line should it be?
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Old 06-23-2011, 10:56 AM   #5
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A tiny hole is all that is needed, something like 1/16". If your loc-line is near the top of the tank, you might not even need a hole. Your system should have enough sump capacity to hold whatever drains out of your display tank in the case of a power outage. Meaning that you could drain your tank to just below the drains, and not have a flood. So keeping the output of the locline at or above the drains would eliminate the need to drill a hole.

I wouldnt count on a check valve to prevent a flood. The amount of gunk that builds up even in high-flow plumbing is enough to keep a check valve from properly sealing in no time at all.
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