ATO, Stop siphoning?

[untamed]

Don't submerge the output end of the ATO pump.

[Brent F]

I have the surface of the ATO jug lower than the outlet which is above my sump (not in the water). When the pump shuts off the line drains back to the ATO jug.

[Pescador]

As untamed said don't submerge the output to the sump and put a siphon break hole in the output line just above the water line in your ATO reservoir.

[calkrog]

Originally Posted by Pescador

As untamed said don't submerge the output to the sump and put a siphon break hole in the output line just above the water line in your ATO reservoir.

this is what i have done, my res is higher than my display and i top up in the sump. never had a problem.

[spreerider]

could you use a NC Solonoid valve