Thread: Air lift pump

Hi mate,yes I did a "U" bend one a couple of years back and works really great.
I used pushfit 110mm pipe and made an air chamber on the rising part of the U bend near the bottom,but I believe you can drop an airstone down.

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Hope you can understand the diagram,the 4" T just through the pond wall has an air escape but I blanked it off as it works better straight through with no air outlet giving more forceful current,and quieter.
Works really well and cheap to run with 1 x 80ltr air pump,which also does air bar and grow on.
In winter I use a smaller air pump useing 40 watt and still works great.

You really don't need them all that deep either. Mine work well at 90-100cm.
I think 1.5m is ideal but you'll definitely get useful flow at less than that.
I also think that my 3inch airlift works way better than the 4 inch, but that's visual,. It rises higher and stronger than a 4inch with the same air,.but I can't say for sure it's actually flowing more volume.