<a href=showthread.php?s=&postid=15148082#post15148082 target=_blank>Originally posted</a> by kgross
You control the siphon by how it is setup. Fasten the end of the airline at the top of the sump so it can not siphon from your container. Or if the water level in the container is higher than the top of the sump, you can use a small piece of pipe standing up in the sump to put the airline tubing into, or just a T in the airline tubing at the highest spot, with the top of the T going up to the top of the tank and then fastened into place.
Kim