Backyard Aquaponics
A place to discuss aquaponics

Has anyone seen these?


They are degassing columns. Looks like a good product for getting oxygen into the water. If the water returning to the tank was passed through these we could be sure there was plenty of oxygen.

1 Segment, 76% DO
2 Segments, 84% DO
3 Segments, 89% DO
4 Segments, 92% DO
5 Segments, 94% DO

I found them here: http://www.aquaticeco.com/subcategories/3681/Degassing-Columns/degassing%20column/0

Currently I have a film of water to pick up oxygen and noting else.

Koi keepers use exactly the same principle... called Bakki Showers...


Filled with media... they also provide filtration...

They're basically a "trickle tower".... but do suffer some evaporative loss...

On the other hand... they can provide a degree of "cooling"... and (as above) filtration...

I use a single half drum in my mega system...

With your existing outlet Dandi... you could increase the oxygenation by drilling a hole in the elbow... inserting a 4mm tube, glued to the top of the elbow (downward)...

The "venturi" effect of the water drawing the air through the tubing "straw" adds considerably more oxygen...

You can see the affect in the pics below...

With the tubing blocked (no venturi)... the water flows "clear"...

With the tubing open, the venturi effect sucks in air... as can be seen by the disturbed "milkiness" of the water flow...

Good info Rupe!

I do not have a full pipe of water so I am not sure how much if any air I can suck in. This pump is moving 700- 800 GPH; its only 40 watts. Now, when I start circulating out side again then I can do that.