Bell Siphon

[Mark]

On the outer 3 inch strainer pipe how are you holding it in place?

Mine just has hydroton around it and I guess that is not good enough, as it appears that it is being pushed up somehow as I have some hydroton in the fish tank, not allot but still annoying.

I placed a screen around the strainer pipe so this is the only way that it can get in that I can think of.

Will aquarium sealer hold this strainer pipe to the bottom or maybe a weight of some type on the top of the pipe?

[TCLynx]

I've done constant flood beds, as long as you are flooding and draining regularly then you should be fine.