Aeration - Trying to get the most from siphon outlet - Part 4 - Final

Part 1 : Here
Part 2 : Here
Part 3 : Here

High Water Problem

This post to show the problem I am facing during water high situation on my set, with this situation I'm figuring out how to get the most in silencing and aerating the fish tank.

Its a difficult task to do, I only have few inches clearance to gets things done. As did by thanson77 on his Youtube comment, he angle the perforated pipe for his installation. I will try this approach and see how it goes.

Photo  of the siphon outlet at high water point.
Siphon flushing at highest water point.

This is video of the situation.

I tried replacing the threaded adapter photo below after the growbed with a threaded elbow. It make the siphon outlet higher than water level but it fail in cutting off the siphon.

Below the threaded elbow. It effectively reduce the 1st vertical down drop by 2.5 inches.
This reduce drop from growbed to first elbow cause it to fail cutting off the siphon.

With the threaded adapter and elbow, the initial drop is at about 6 inches minimum, after replacing it with the threaded elbow it reduce to about 3.5 inches.

Guess I'm threading on Siphon Tuning now, well we learn something everyday.

I end the silencing and aerating part of siphon here, because those I have tested work and the only problem now with higher than normal water. This should be dealt with on another topic, like siphon tuning.



  1. Can you heat the outlet and flaten it so the water fans out across the water? Bruce

    1. Never tried it, I guess it will fan, on how much additional aeration I am not sure. Only worries is if it will cause back pressure making siphon unreliable. Now I just use the double elbow with final vertical with lots of holes, this is the easiest to make and aeration very good.

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