Results 141 to 160 of 187
Thread: Going to attempt an air lift
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16-05-2019, 08:51 PM #141
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freddyboy Thanked / Liked this Post
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20-05-2019, 07:56 PM #142
Nice test setup Frimley ...
Yes the only easy way to lift water higher is a longer drive tube ... you've done everything else about as well as you can do with stock easily available parts. You could also keep the air feed line as short as possible and reduce any restrictions in the air line inside bore to keep back pressure to a minimum but the main element is drive tube length.
Air lifts are not a good choice for moving water any height above pond surface level unless you just need a trickle ... great for surface level returns though ...
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20-05-2019, 08:39 PM #143
Hi Trace, I get the top of the pipe bit [return] but do you simply drop a length of pipe with a bend and a piece of pipe in the end and drop it into somin like a water holding butt, then drop a weighted air stone to bottom of pipe, which then causes the water to rise.
Thanks
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20-05-2019, 10:15 PM #144
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21-05-2019, 05:14 AM #145
The best air lifts are the simplest ... the commercial designs that you see are made more complicated (pressure chambers etc.) simply to make them marketable.
Yes ... dropping an airstone down a length of pipe with a 90o bend at the top at surface level is all there is to it ... there are a couple of other little refinements that can make the design more elegant but but yeah a length of straight, a bend, some tubing and an air stone are 95% of the way there.
If you use standard 12mm OD 8mm ID tubing for the air line you will not have to weight the air stone.
Drive pipe length is the most important element ... after that getting the most efficient air flow (least backpressure etc. in the air line etc.) is next. Having a bigger pump does not always mean better flow ... I've read in many places that the most efficient lifting and stirring of water is done by finer air bubbles and have witnessed that putting more air through the same size holes only makes the bubbles larger so it seems there is a sweet spot and a larger pump pushing more air does not mean a more efficient movement of water ...
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ganroob Thanked / Liked this Post
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21-05-2019, 05:17 AM #146
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Trace Thanked / Liked this Post
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21-05-2019, 05:29 AM #147
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freddyboy, Frimley Koi keeper Thanked / Liked this Post
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21-05-2019, 05:30 AM #148
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freddyboy, Frimley Koi keeper Thanked / Liked this Post
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13-01-2021, 07:16 PM #149
Frim did you get your airlift working in the end matey.
Sent from my F5121 using TapatalkFreddyboy the legend
"we are water keepers first"
Johnathan
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Frimley Koi keeper Thanked / Liked this Post
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13-01-2021, 07:20 PM #150
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Ajm Thanked / Liked this Post
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13-01-2021, 07:22 PM #151Freddyboy the legend
"we are water keepers first"
Johnathan
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Frimley Koi keeper Thanked / Liked this Post
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13-01-2021, 07:36 PM #152
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Ajm Thanked / Liked this Post
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13-01-2021, 07:39 PM #153
Was thinking about digging a water butt down in ground and using that as a res and drop the air lifts in so hight roughly around 1200mm
Sent from my F5121 using TapatalkFreddyboy the legend
"we are water keepers first"
Johnathan
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Frimley Koi keeper Thanked / Liked this Post
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13-01-2021, 09:03 PM #154
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Ajm Thanked / Liked this Post
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13-01-2021, 09:08 PM #155
Bd to multibay 110mm. Then moving bed in last bay it has 40mm tank connector didn't know if to widen to 110mm or add second 40mm to then to waterbutt with 2x40mm air lifts?? If that jibris makes sense
Sent from my F5121 using TapatalkFreddyboy the legend
"we are water keepers first"
Johnathan
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Frimley Koi keeper Thanked / Liked this Post
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13-01-2021, 09:13 PM #156
Kind of.
I initially went 40mm push fit then found it was difficult trying to find an air stone that would fit in it so went for 2" with rubber boot tees etc so it was easy to adjust.
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Ajm Thanked / Liked this Post
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13-01-2021, 09:41 PM #157
Found what says 40mm air stone and worse case file the edges down a bit? But yeah rubber boots could be the trick like
Sent from my F5121 using TapatalkFreddyboy the legend
"we are water keepers first"
Johnathan
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Frimley Koi keeper Thanked / Liked this Post
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13-01-2021, 09:50 PM #158
That's what I thought about the air stone but still went 2" as I was dropping the airline and air stone down the top of the drive tube into the chamber at the bottom which means the air stone can be easily replaced if it gets blocked in the future.
You will find you will probably need something smaller than a 40mm air stone if you go for 40mm pipe so it has more room to expel the air.
Have you checked out the link to Trace's simple air lift thread? I think I put it on there?
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Ajm Thanked / Liked this Post
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13-01-2021, 09:56 PM #159
Haven't read it yet but I will be amazing knowledge that woman. Was thinking cutting slots in the bottom for water intake and feed the air line though there aswell cable tie airline on out side of pipe keep it tidy and thought I could get a tight fit for the stone or is that a bad thing if its tight
Sent from my F5121 using TapatalkFreddyboy the legend
"we are water keepers first"
Johnathan
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Frimley Koi keeper Thanked / Liked this Post
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13-01-2021, 10:02 PM #160
Just had a quick look at the first few pages of this thread and there is a link on one of Trace's posts with the correct (at the time) link.
There's some posts from Fred too bless him
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Ajm Thanked / Liked this Post
The Daily pond temp thread
Just kept 12 overnight for the first time. Hitting 12.8 in the daytime but bang on 12 first thing...