| Airlift Pumps For Koi Ponds | |
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Marius Bezuidenhout
Posts : 836 Reputation : 0 Join date : 2009-01-29 Age : 57 Location : Bloemfontein but mostly somewhere else
| Subject: Airlift Pumps For Koi Ponds Thu Aug 13, 2009 9:13 am | |
| I am considering playing around with some ideas on my QT pond ( must still build QT). Nothing to loose:
You can find interesting information about Airlift Pumps here:
http://home.netcom.com/~larry_l/air_lifts.htm
Also good to see:
http://www.areainc.com/aerator/main-brochure.pdf |
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David Coetzee
Posts : 232 Reputation : 0 Join date : 2009-03-31 Age : 54 Location : Randburg
| Subject: Re: Airlift Pumps For Koi Ponds Mon Aug 17, 2009 5:23 pm | |
| using the airlift method would be a awesome cost effective way to run a pond. Besides you would get pretty good flow artes anyway.
Something like the Boyu aq3, would be plenty to run two or three airlifts on a qt |
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Bill D
Posts : 18 Reputation : 0 Join date : 2010-02-17 Age : 83 Location : Fish Hoek
| Subject: Airlift Pumps For Koi Ponds Wed Mar 17, 2010 5:18 pm | |
| Hi all, Still in the planning stage and getting as much info as the grey matter can absorb.Was also thinking of going the airlift way. My first pond I am planning will eventually if all goes well end up as the quarenteen pond 3m quarter circle 1.5m deep with two up and over filters on the sides of the pond.Initially one of the filters will operate the normal way ie poolpump,on the other filter I will play around with a airlift. The main reason for the airlift is to reduce electricity consumption. In comparisson Poolpump at 750W and a Centrafugal blower at 60W supplying air at 600 CubM/Hr at 1300rpm,on a 4235CubM/Hr blower only 160W that is a lot of air. Any ideas or do and donts most welcome. Toppie |
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wayneb Admin
Posts : 1681 Reputation : 29 Join date : 2007-12-08 Age : 45 Location : Kraai Fontein, Cape Town Metropol
| Subject: Re: Airlift Pumps For Koi Ponds Wed Mar 17, 2010 5:29 pm | |
| Toppie, sorry im not able to help you but want to know how does one calculate how much water is being moved by an airlift for every liter of air? |
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Bill D
Posts : 18 Reputation : 0 Join date : 2010-02-17 Age : 83 Location : Fish Hoek
| Subject: Re: Airlift Pumps For Koi Ponds Wed Mar 17, 2010 6:59 pm | |
| Hi Wayneb,It all depends on the diameter of the riser and at what depth the air is fed into the riser,there are formula,s but extremely complex and far beyond my grey matter,being a retired Diver I had a lot to do with airlifts in my 34 years of diving and operated massive airlifts that could easily swallow a person if not careful. Believe me a lift of say 110mm pipe will lift a lot of water,and the suction of the air at the mouth of the lift if it gets hold of your hand you wont able to remove it,the shallowest I can recal operating such a lift was in 4M of water. The whole thing works on Boyle's Law eg if a baloon filled with air say 2litre, is taken down to 10M dept the volume at that dept would be half ie 1litre and visa vera.if you fill the baloon at 10M with 1 litre's of air on the surface it would be 2 litres. Other factors that plays a part is the air pressure bends in the riser size of the initial bubbles. Will search for the formula's and post the URL |
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Bill D
Posts : 18 Reputation : 0 Join date : 2010-02-17 Age : 83 Location : Fish Hoek
| Subject: Airlifts URL's Sat Apr 24, 2010 10:34 am | |
| Hi all, Here are some interesting URL's for more information on the use of airlifts pumps for koi keeping. I am surprised that the idea of using these pumps on koi ponds was only investigated in the 90's. Those who are using them seem to be happy especially on the electrical consumption side. http://www. herinhondura.wordpress.com (search in forum for Aquaponics) happykoi.co.za koiphen.com airliftpumps.com geyserpump.com elkoi.es (in spanish but the best info so far) alabdiffusers.com koiquest.co.uk (forum, Air up lifts follow up discussion re elkoi.es) Many more was obtained from google on websites, images and video searches ie Airlift pumps. Some video's on Youtube was a eye opener. |
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bobby
Posts : 1375 Reputation : 0 Join date : 2008-06-30 Age : 71 Location : Malmesbury Cape Town
| Subject: Re: Airlift Pumps For Koi Ponds Sat Apr 24, 2010 11:08 am | |
| Hi Bill D Thanks for sharing, although I have just completed a new pond build I am always open to new and modern ideas. I have been in contact with a keeper in Vishoek that completed a new pond 2 months ago, Keep us posted, I would love the opportunity to see your construction and ideas put into practice.
With the way our electricity bill is going many hobbyist want to close their ponds due to the severe effect on household budgets. So in my view, new views to bring about running cost saving and at the same time maintain good water quality is very important for the future of the Koi hobbyist in SA.
Ps. I know this technology has been around for a long time, but personally I have not seen this working in practice, on one of the many ponds I have visited the past 3 years. |
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Bill D
Posts : 18 Reputation : 0 Join date : 2010-02-17 Age : 83 Location : Fish Hoek
| Subject: Airlift Pumps for Koi Ponds Sat Apr 24, 2010 12:11 pm | |
| Still getting a bit lost in this forum,thanks for the replies. I mistakenly place a topic under Airlifts on this forum instead of here,where I tried explain what I am aiming for hopefully will start by the end of May. The captured drawings did not turn out the way I planed crisp and clear. Must still find out how to place a photo directly on this forum instead on a link away from the forum. Have a look will appreciate the feedback. Pity I dont have a pond see there are 19 Koi looking for a home in Simonstown. |
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