diy overflow - The Planted Tank Forum
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post #1 of 7 (permalink) Old 02-03-2015, 02:57 AM Thread Starter
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diy overflow

Has anybody made a overflow out of a HOB filter. Was thinking this would work cause when the power goes out the filter would stop.

I used to keep an open mind but my brains kept falling out.
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post #2 of 7 (permalink) Old 02-03-2015, 04:10 PM
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The biggest problem with this is you will never get the flow going out of the tank to match the flow going back into the tank, the two pumps will never equal out, even if you valve one back.

Honestly for the price of a midrange HOB filter you can get a HOB overflow that will do the job for you with a lot less risk.
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post #3 of 7 (permalink) Old 05-28-2016, 09:10 PM
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I know this is an old thread , but I wanted to ask starfire12 if they tried it? I was thinking of doing the same thing with an spare Penquin 200 I have just laying around . Oh , I found this thread by searching...lol
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post #4 of 7 (permalink) Old 05-31-2016, 04:23 PM
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It is flawed since you can't perfectly match the pumps. You'd have to use multiple sensors to detect water level and turn off pumps so the water level stays about equal.


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post #5 of 7 (permalink) Old 05-31-2016, 04:57 PM
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Sometimes trying to re invent the wheel costs a lot more than just buying a new wheel.

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Someone who asks for advice, then does the exact opposite.



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post #6 of 7 (permalink) Old 05-31-2016, 05:58 PM
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An overhead sump that uses a pump to send water above the tank and lets gravity feed back into the tank can be made out of a spare HOB filter, but I wouldn't use it as an overflow for the previous reasons.


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post #7 of 7 (permalink) Old 05-31-2016, 11:46 PM
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Ok I guess I will scrap that idea . I just hate to spend high dollars for an acrylic box HOB overflow....lol Thanks all for the advice.
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