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Old 06-30-2012, 11:15 AM   #11
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The water from the dt runs down into the a micron bag in the sump. Would it be smart to put some sort of carbon in there?
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Old 06-30-2012, 11:39 AM   #12
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I wouldn't put carbon in there just because it might make a mess. Rather, if you need to run carbon it might be easier to get a mesh bag from your LFS and stick it in a high flow area. Those filter bags tend to clog up over time and overflow a bit, and if that happens and you have carbon in there you are liable to end up with carbon granulars floating around in your sump.
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Old 06-30-2012, 11:43 AM   #13
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Gotcha. Thanks
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Old 06-30-2012, 11:54 AM   #14
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If you have return tubes going over the tank, they will back-siphon water into your sump and you'll have a flood even if your sump can handle the initial water load from the DT. To prevent this, you should drill holes in your return tubes just below the water line in the DT. This way air gets sucked in and prevents the back-siphon.
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Old 06-30-2012, 12:06 PM   #15
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Quote:
Originally Posted by scottayy View Post
If you have return tubes going over the tank, they will back-siphon water into your sump and you'll have a flood even if your sump can handle the initial water load from the DT. To prevent this, you should drill holes in your return tubes just below the water line in the DT. This way air gets sucked in and prevents the back-siphon.


Good point. This step is often overlooked. Definitely multiple small holes is the way to go too, in case one gets plugged up by algae or a critter. Any redundancy that can be built in to prevent your sump from flooding is a good thing in my book. Some folks will also install a check valve on the return line as an extra measure of security to prevent possible back siphoning, even with holes drilled in the return near the water level of the DT.
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Old 06-30-2012, 09:54 PM   #16
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So I turned my return pump off n let the overflow go until it stopped. My sump was about 3/4 full. So I can rest easy knowing if I lose power it won't flood. 😃
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