Water siphoning question?

[Dundermifflin]

Want to run a line connected to a power head that's at the bottom of my 50 gallon holding container that goes into my sump. I would leave the end of the line above the sump so that water falls in without the line touching the sump water. Want to be able to simply press a button to fill the sump.

Will this set up work without having to worry about siphoning/back filling? If the power goes out the sump water would not touch the end of this line, but will water from the line come through the power head and overflow the sump when the power head is off?

Suggestions for a better set up appreciated?

Thanks.

 

[igadget56]

Same answer as in your other post!!

 

[woodnaquanut]

If the holding container end is above the sump end you most likely will start a siphon from holding container to sump. If the sump end is above the HC end and the sump end touches the sump water it will back siphon.

To visualize, water acts a lot like a 'slinky'.

 

[RocketEngineer]

If the water level in the 50g container is above the height of the outlet, it will continue to flow water when the power is off.

What is the purpose of this setup? It would help to know what the application is for to give you good advice.

 

[skeeter_ca]

My ATO barrel is about 8ft above the water level in my sump. I have a small hole in the hose in the barrel above the water line. When the pump turns on it sprays some water out of the hole back into the barrel. When the pump turns off the hole creates a siphon break and the water won't siphon either direction.

In your description if the barrels water level was above the water level in the sump it would siphon into the sump until the barrels water level was the same as the water level in the sump or until it emptied.
If the water level in the barrel is below the level in the sump it would work properly.


skeeter

 

[SGT_York]

The height of the sump water is irrelevant, the outlet needs to be higher than the water level in the ATO reservoir. Two ways to do a ATO higher than your sump are to raise the outlet, placing the output into the display tank overflow is a possibility as is adding an air vent at the highest point in the plumbing just like skeeter has done.

 

[Dundermifflin]

Thanks. When you say air vent do you mean just drilling a small whole or are you referring to a piece I should get to connect to the line?

 

[JP Reef]

My ATO is about 2 feet higher than my sump, so what I did was put a T in the line at the top of my ATO tank. I connected a 2 ft piece of tubing off the T that goes straight up as a vent line. The other line goes to my sump and is about 2 inches higher than the water level. When the pump is running it doesn't have the power to pump up the vent, but when it shuts off the vent line breaks the siphon.

 

[SGT_York]

A small hole works if you don't mind water leaking out. Inside the Reservoir is an ideal place. (that works for almost all applications) If you need the air valve closer to the sump/tank you'll need a fitting and an additional hose for the air valve so it doesn't get salt spray everywhere. Just like JP Reef suggests.