trouble with DIY overflow

  • Theaggressiveoscar
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Theaggressiveoscar replied the topic: Re: trouble with DIY overflow

the check valve is brand new, I am supposed to be able to suck air out but not be able to blow back in, right?

am I doing the math wrong perhaps?

-it takes it 8 minutes to siphon out 24gals, so..... 60/8= 7.5
then 7.5x24=180gph.....is that right? Maybe I should just buy a wet dry and an overflow box........
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JasonR replied the topic: Re: trouble with DIY overflow

I think you are just overlooking something...with that amount of head the 3/4" should be able to do at least 1000gph...
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JasonR replied the topic: Re: trouble with DIY overflow

Yes you will be able to suck air and water out, but not blow in. What are you using to suck the air out?
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Theaggressiveoscar replied the topic: Re: trouble with DIY overflow

my mouth? :laugh:

take a look at this
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OFL replied the topic: Re: trouble with DIY overflow

3/4 inch is a little narrow in my opinion, if you make it 1.5 inch then you will find the flow rate is much better

I may not always be right, but I am always the BOSS :-)
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JasonR replied the topic: Re: trouble with DIY overflow

No that isn't gonna cause probs. I think you need to get a pump like that guy in the vid was using cuz I don't think you're getting all the air out. You did fill both tubes also right??
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JasonR replied the topic: Re: trouble with DIY overflow

OFL wrote: 3/4 inch is a little narrow in my opinion, if you make it 1.5 inch then you will find the flow rate is much better


Yeah but Penn even if he only had 12" of head according to siphon flowrate charts he'd still be getting 600-700 gph out of 3/4" pipe...

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Theaggressiveoscar replied the topic: Re: trouble with DIY overflow

OFL wrote: 3/4 inch is a little narrow in my opinion, if you make it 1.5 inch then you will find the flow rate is much better


That would do the trick, but I would have to buy another water pump that can handle more gph, the one that I ordered only handles 650gph, 1.5" pvc would do 1000+gph, and I'm not looking to create a filter that will replace my canister, I just need a little extra filtration to have better water quality
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JasonR replied the topic: Re: trouble with DIY overflow

Maybe the friction loss of that vinyl tubing is too much. Can you try and test it without the vinyl tubing??
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Theaggressiveoscar replied the topic: Re: trouble with DIY overflow

I did not fill both tubes........that could be it.....be right back, I'm going to try that out
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