Overflow blowout possibilities

Jetsetter57

Jetsetter57

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#1
I generally don't fill up tanks without matching the internal overflow level to the tank level. I'm leak testing a used cube tank with this type overflow.
image.jpg

It's a 36" cube 130ish gallons. Is the overflow safe from collapsing with this much water pressure or should I block off the bulkheads and match the level like usual? I've never done this on "big" cube tanks. Thanks for the input. I think [MENTION=5085]newtothis[/MENTION] just sold a 36" cube that had an overflow drain setup he emptied every time he cleaned the sump.
 
turbonut

turbonut

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Your not going to have an issue, if overflow were to collapse then you don't want that tank anyways.


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N

newtothis

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Jetsetter57 said:
I generally don't fill up tanks without matching the internal overflow level to the tank level. I'm leak testing a used cube tank with this type overflow.
View attachment 54183

It's a 36" cube 130ish gallons. Is the overflow safe from collapsing with this much water pressure or should I block off the bulkheads and match the level like usual? I've never done this on "big" cube tanks. Thanks for the input. I think [MENTION=5085]newtothis[/MENTION] just sold a 36" cube that had an overflow drain setup he emptied every time he cleaned the sump.
Click to expand...
you should be fine. If you really look a the overflow, it consist of a glass backing with an acrylic cover. its done this way to save cost in cutting the weir on acrylic is cheaper than CNC glass. An yes, i utilize a herbie drain w/o a stand pipe on my main. So when the return is off, my overflow completely drain leaving an empty clean overflow.
 
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