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 Pond Aeration

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AndreBotha



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Join date : 2009-03-05

Pond Aeration Empty
PostSubject: Pond Aeration   Pond Aeration EmptyThu Mar 05, 2009 3:56 pm

Please Help. I need to add air to my pond. Where can I purchase a air pump at a reasonable price, 160 l/min. Any other alternatives of adding air to my pond?
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Marius Bezuidenhout

Marius Bezuidenhout

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Age : 58
Location : Bloemfontein but mostly somewhere else

Pond Aeration Empty
PostSubject: Re: Pond Aeration   Pond Aeration EmptyThu Mar 05, 2009 5:22 pm

http://superpumps.co.za/shop/index.php?_a=viewCat&catId=50

Ek het lugpomp in Bloem by winkel bestel wat 650L / min lewer. 'Piston' soort motor. Was R1800.Werk soos 'n bom maar is by verre te veel vir my 30000L dam en dit trek 560Watt. Bogenoemde site se pryse lyk vir my billik aangesien party plekke tot R4000 vir 200L / min vra
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PostSubject: Re: Pond Aeration   Pond Aeration EmptyFri Mar 06, 2009 9:22 am

Ek wonder nou net, is dit moontlik om te veel "lug" in 'n Koi dam te he?
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Admin
Admin
Admin

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Location : Cape Town

Pond Aeration Empty
PostSubject: Re: Pond Aeration   Pond Aeration EmptyFri Mar 06, 2009 10:59 am

My gevoel is, te veel suurstof borrels verhoed dat jy die visse behoorlik sien, maar ja, jy kan nie te veel suurstog he tensy jou water in elk geval versadig is. Water kan net 'n x hoeveelheid suurstof akkommodeer.

Ek spandeer eerder daai geld op 'n groter pomp met ekstra venturi's. Jou "flowrate" verhoog, jy dwing die suurstof arm water van onder na bo wat 'n kompressor nie so goed doen nie, en die ekstra venturi voorsien meer suurstof en dit werk baie goedkoper uit om aan te koop en te onderhou.

Ek het net ekstra suurstof (deur middel van 'n kompressor) in my filter kamers en geen in my damme nie.
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http://www.koionline.co.za
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Pond Aeration Empty
PostSubject: Re: Pond Aeration   Pond Aeration EmptyFri Mar 06, 2009 5:28 pm

Wel,
ek is nie 'n groot voorstaander van “venturis” nie! In elk geval nie op die manier waarvoor hulle ontwerp is nie (onder die water geplaas).

Ek en Chris Neaves het al hier oor vasgesit, en ek moes later herken dat hy reg was.

“Venturis”, "plaas" nie net suurstof in die water nie, maar ook ander gifstowe van uit die atmosfeer, wat deur die “venturi” in die water “geblaas” word.
Ek het gevind dat die gebruik van venturis, klein "seertjies" ( so groot so ‘n kopspeld-kop) op die vis veroorsaak, wat dan soms in ulcers ontaard.

Nadat ek my venturis uit die water gelig het, het die verskynsel verdwyn en ek het nie weer die probleem ondervind nie.

Pond Aeration KP093
Pond Aeration KP094

Alhoewel buite die water verrig die “venture” dieselfde werk, maar dit help dat die gifstowe ( wat gewoonlik ligter) as suurstof is kan ontsnap voordat dit in die water geblaas word.

Pond Aeration KP096

PS: Miskien kyk Koi anders as ons na borrels Rolling Eyes Wink
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Jaco

Jaco

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Location : Odendaalsrus Freestate

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PostSubject: Re: Pond Aeration   Pond Aeration EmptyFri Mar 06, 2009 6:04 pm

EK STEM SAAM, VENTURIS SUCK cyclops
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Chris Neaves



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PostSubject: Re: Pond Aeration   Pond Aeration EmptyFri Mar 06, 2009 7:40 pm

That was good .... clever.
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Chris Neaves



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PostSubject: Re: Pond Aeration   Pond Aeration EmptyFri Mar 06, 2009 7:50 pm

Hi Andre,
In order to get air into water some degree of force is needed. This is because water is "sticky".

A waterfall is really great. Air stones are OK. Venturies also work but there is a factor you must keep in mind.

We are always told a venturi dissolves OXYGEN into water. This is not entirely true. The atmosphere is around 80% nitrogen, 18 - 19% oxygen and 1 - 2% other minor gasses. A venturi pushes air into the water under pressure - not only oxygen.

High levels of nitrogen don't agree with koi or other fish for that matter. Better to de-gas the water under pressure by placing the venturi's pointing towards the surface or as in Pieter’s pictures out of the water pointing into the pond. If you have a water fall / and or stream you could run your venturies into the water fall or stream. This adds a great deal of air and balance the pressure of the gasses.

Trickle filters are great at oxygenating the water and filtering it.

Hope this helps,
Chris
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