ATO / Siphon effect question...!!

[rskillz]

A friend of mine has a storage room behind his tank, but it sits up about a foot higher than the sump. When the float switch kicks on the pump, it won't stop. Tried just about everything I could think of and the problem persists, any solution other than moving the ATO reserve?

 

[shrimpy brains]

You can drill a small hole in the hose, just above the water line to create a siphon break. Also, a check valve would work.

 

[rskillz]

Shrimpy Brains;654735 wrote: You can drill a small hole in the hose, just above the water line to create a siphon break. Also, a check valve would work.

Thanks, I'm thinking the small hole will work great!

 

[lilrobb]

Doubt the hole works, it is siphoning down.
A hole in the TO container will cause water spray and one in the sump will be useless...
Check valve, baby!

 

[rbredding]

Rskillz;654732 wrote: A friend of mine has a storage room behind his tank, but it sits up about a foot higher than the sump. When the float switch kicks on the pump, it won't stop. Tried just about everything I could think of and the problem persists, any solution other than moving the ATO reserve?

the pump won't stop because the power supply on the pump is set to a controller with an electronic (solid state) relay..

put it on a mechanical (magnetic relay that clicks) relay and your problem will be solved..

 

[grouper therapy]

You are correct that the problem is with the siphon so a check valve or a non latching relay will not work . You will either have to lower the pump or create a siphon break. It will have to before the discharge side of the pump or at an elevation higher than the water level of the pump intake. One way

 

[jmaneyapanda]

Put a siphon break INSIDE the RO storage tank. Not in the aquarium sump.

 

[1mbrews8]

i have a "barb" "T" at the top of the hose as it is coming over the top... it seems to work...
mike

 

[darcurr]

1mbrews8;654821 wrote: i have a "barb" "T" at the top of the hose as it is coming over the top... it seems to work...
mike

+1
easiest solution