on my
ATO, i have a large garbage can in the closet of the fish room. the
ATO sensors and controller are both on the
sump. my
ATO is connected to a pump in the garbage can in the closet and is controlled by the sensors in the
sump. connected to the pump is the tubing that runs out of the closet and into the
sump. at the highest point (rim of the garbage can) i have drilled a 1/4" hole in the bottom side of the tubing and inserted a piece of 1/4" airline tubing into it (just enough that it will not come out). this hole allows the siphon to be broken by allowing the tubing to pull in enough air to stop the flow of water through the tubing.
