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Thread: New KOIPOND 90 m3
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14-05-2019, 09:08 PM #121
I don't think that will work as you can't make an airlift push the water back down like that and all I think that is going to do is push the aerated water up out of the top of the T ?
The idea is to keep the drive tube straight with a T at the top with the branch off outlet of the T going horizontally and then the vertical bit of the T just needs to be left open so the air can escape like the one I made. Also you want a T near the bottom of the drive tube which does 2 things - First of all it lets the water into the drive tube fairly near the bottom of it so you can then have an air stone sitting in a section of pipe below the T and secondly it lets you drop the air stone straight down the drive tube easily and also allows you to get the air stone back out again should it ever need to be replaced as they can get blocked up over time apparently.
Even with my design as soon as you start to put any restriction on the water trying to come out of the horizontal pipe coming off the T at the top of the drive tube the water will just take the path of least resistance and probably just come straight out of the top of the drive tube or the nearest available exit.
From my experience with air lifts is an air lift will push water as long as there is very little resistance trying to stop it. Although it is called an air lift it normally can't actually lift water much above the level of the surface of the water it is sitting in - well that what I was told but I found it was possible to get a very basic airlift built out of 2" waste pipe to push water out the horizontal pipe at up to 18" above the surface of the water and I think I actually had a photo of it doing just that.
Basically as soon as the air has escaped from the water you need the water to exit the horizontal pipe fairly quickly and to do that you need a bit of help from gravity plus the water coming up be hind it.
As I said before - keep it simple and it will work. It will move volumes of water pump but can't pressurise water if that makes sense?
I tried with 40mm push fit first but found it too small to fit an air stone in so went for 2" waste and flexi rubber boot fittings so I could alter it as I went along to see what happened when I tied different lengths of drive tube etc.
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16-05-2019, 07:16 PM #122
I have plan to drill all the holes this Saturday.
This is drilling scheme, with descriptions.
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Frimley Koi keeper Thanked / Liked this Post
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16-05-2019, 07:30 PM #123
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16-05-2019, 07:34 PM #124
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Frimley Koi keeper Thanked / Liked this Post
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16-05-2019, 07:51 PM #125
The only things I have are on the Airlift thread but they are only very basic drawings and photos but the basic principal can be scaled up very easily.
Here's the link to my thread again -
https://www.koiforum.uk/pond-diy-tip...-air-lift.html
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Tom Koi Thanked / Liked this Post
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16-05-2019, 08:10 PM #126
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Frimley Koi keeper Thanked / Liked this Post
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16-05-2019, 08:33 PM #127
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17-05-2019, 10:02 AM #128
Main inlets I am going to use are 6x 110 - I have raised airlifts outputs to about 40cm below water level (was 60+). Guy from airlifts.eu told me that it should work. Maybe not on full power, but it should. Max volume per one 110 pressure airlift is about 22 m3/h. Lets assume that in my scenario it will be 50% or less. So multiple by 6 give us about 60 m3/h just from airlifts alone. I will give it a try.
Second ones 4x 63mm are just in case for vario pumps as a backup or I will use them as a help for airlifts to achive 90-100 m3/h altogether - if there is a need to.
Those are thle plans. I have no idea how it ends with airlifts efficiency. Hope to run some tests within few months
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18-05-2019, 07:20 PM #129
All the holes have been drilled today. Tomorrow I will try to settle all the inlets / outlets and make final preparations for the liner. Hope to put it before end of May. It is time to fill it with water. At least half of it
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18-05-2019, 07:36 PM #130
Think am more excited about this than I ever was about mine
Sent from my SM-N950F using TapatalkFreddyboy the legend
"we are water keepers first"
Johnathan
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18-05-2019, 09:27 PM #131
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18-05-2019, 10:35 PM #132
This is going to be some pond Slickbe.
Those drills look the business and great job.
So are you going for a box weld liner?John
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19-05-2019, 06:16 AM #133
Looks the biss. And looks professional y done love it. Love to see how you cut all them holes in the liner. Once in and lined up.
And all sealed up.
Brilliant
Sent from my SM-G925F using Tapatalk
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19-05-2019, 09:00 AM #134
Some part of the pipes for all the plumbing. These on the foto are 4m long. Altogether it will be over 200m of them.
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About liner I am going to use EPDM Firestone. It will be probably glued and then vulcanized similar like car tires. I will use professional company for this because I do not have any experience in this matter. And this should be done perfect for the first time.
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19-05-2019, 02:31 PM #135
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19-05-2019, 07:59 PM #136
I have managed to put all the tank conectors today. Tomorrow I have to stick them permanetly by seal foam.
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The flanges extends about 2mm from the wall line. It should be no problem to seal them with proper glue.
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19-05-2019, 08:17 PM #137
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19-05-2019, 09:00 PM #138
Every time I look at this thread I can't get over the size of this project, I mean, All that soil removed, all those blocks, 200 metres of pipe, it is incredible.
How many people have been working on it?
I would be amazed if you are doing all this by yourself. It is such a mammoth build.
Also, it actually looks bigger than 90m3. I'm almost certain you could fit more than 8 of my ponds in there!
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19-05-2019, 09:13 PM #139
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19-05-2019, 09:38 PM #140Freddyboy the legend
"we are water keepers first"
Johnathan
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Every day feeding container?
Good shout, I'll have a look at Takazumi :)