Built in over flow siphon??

[natclanwy]

Originally Posted by rostato
http:///forum/post/2679993
I am going to the fish store this weekend and going to add 12 in of loc-line to the ones I have orders so I can arch it up out of the water and then drill a hole.
I did not drill a hole in this one. I just wanted to get it working well enough to start the tank.
That should work, I haven't used lockline before so I wasn't sure if you could drill a hole in it or not.

 

[natclanwy]

Originally Posted by KellenR
http:///forum/post/2681349
I think I'm a little confused as to what you're trying to do here then.
He is trying to get the syphon to break before it drains the DT down to the level of the return bulkhead so that the sump does not overflow.

 

[snakeblitz33]

lol, this one is easy. Just add a check valve in line. Either that, or drill a couple small 1/8th inch holes in the sides of the top of the return hose.
The holes should start sucking in air and stop the siphon at that certain point. If the siphon doesn't break for some reason, (IE a snail crawling over the hole at the worst possible point in time) then the check valve will stop backflow. Easy.

 

[rostato]

Originally Posted by SnakeBlitz33
http:///forum/post/2681798
lol, this one is easy. Just add a check valve in line. Either that, or drill a couple small 1/8th inch holes in the sides of the top of the return hose.
The holes should start sucking in air and stop the siphon at that certain point. If the siphon doesn't break for some reason, (IE a snail crawling over the hole at the worst possible point in time) then the check valve will stop backflow. Easy.
I understand, but I am trying to get the siphon to break naturally, and have had no sucess with drilling holes yet. I don't want to rely on a check valve because they are not the most reliable things in the world.