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Old 07-10-2012, 04:18 AM   #1
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HOB overflow vs drilled tank

Hey all, just wondering about some pros and cons of the HOB overflows and drilled tanks. Also, experiences and tips on how to make my own if the drilled tank part it better. The tank is a 180 gal that I would like to be a reef. ( if all this money I'm spending and racking my brain so much doesn't kill me. ) haven't decided what size sump yet. Would have loved to have a four foot but the support beam in the bottom of my cabinet tells me otherwise. Unless there is a way I can safely lift it just above the support beam. Thanks in advance.
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Old 07-10-2012, 04:20 AM   #2
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When comparing drilled to HOB there is no comparison drilled wins in every category..if your gonna spend as much money as you will on a reef then no reason not to drill
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Old 07-10-2012, 04:23 AM   #3
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I'm leaning that way, but drilling seems the cheaper alternative. Not saying if it's expensive that means its better. Just saying.
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Old 07-10-2012, 04:24 AM   #4
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Also, I've read reviews about some HOB ones that have never failed.
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Old 07-10-2012, 04:26 AM   #5
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Quote:
Originally Posted by Pryzz
I'm leaning that way, but drilling seems the cheaper alternative. Not saying if it's expensive that means its better. Just saying.
Drilled cheaper? That is the best way to set up a tank since with a HOB something as simple as your power kicking off for a second or enough air bubbles building up in your siphon then you could lose your siphon which your return pump won't know so it'll run your pump dry and flood your display tank turning into a massive headache
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Old 07-10-2012, 04:32 AM   #6
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I'm not denying drilling is better. Yeah, cheaper. Decent HOB overflows are like 150 bucks on ebay.
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Old 07-10-2012, 05:53 AM   #7
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is there a difference between drilled and built in overflow ??
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Old 07-10-2012, 05:57 AM   #8
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I don't think so. I'm new to the whole sump system. I've spent a lot if time researching but from what I've read there is different ways to making an overflow and such. I'm just asking for people's experiences and advice. Some are apparently noisy some aren't. Trying to get my brain around it all.
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Old 07-10-2012, 11:38 AM   #9
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On my 55 reef I run a CPR HOB overflow with an aqualifter pump. It runs silently and only lost siphon once when the aqualifter was fried in a brownout. Ran my sump dry, but didn't overflow my DT.
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Old 07-10-2012, 12:16 PM   #10
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I think you can build failsafes into both that will not cause overflows. I prefer the drilled method with durso standpipe. Have it in 2 tanks and has never given me a problem and is dead quiet.
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