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 Sandfilter help please

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Charissa

Charissa

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Join date : 2011-02-10
Age : 56
Location : Pretoria

Sandfilter help please Empty
PostSubject: Sandfilter help please   Sandfilter help please EmptyThu Feb 10, 2011 9:27 am

Hi everyone.
I am totally new to the koi pond scene, and found this site very informative. I need help with the filter system i have at the moment, as it clogs up at times.
I used a old jacuzzi mould for the pond. Setup as follows.
2x 50mm normal grated bottom drains, to a 0.45kw swimming pool pump (13500L/h).
From there to a 2 bag sand filter with (what the guy told me, who installed the setup), is koi pond grain.
From there, half to a uv light, and half to a bio filter, both draining to a waterfall, 2 venturi,s and a flow at the bottom of the pond.

My problem is, that the flow keeps on decreasing, until the waterfall and venturi,s stop totally. If i use the system on bypass, which skips the sand filter, the problem is gone, but then the pond gets dirty.
Also, one of the koi sellers in JHB told me, that the flow via my set up is too much, as the bacteria don,t have time to grow, because i am pumping 13500l water, from a 2000l pond.
If i backwash, problem stop for a day, but then, all the natural bacteria, which i want, gets flushed away.
I read about the "channeling" effect problem with the sand filter etc. I am planning to build a slightly bigger pond, next to this set up, but could use some advise please.

Can anyone tell me how to go about the setup, and is it possible to use a swimming pool pump with a settlement chamber and build in bio filter set up?
Can i build a settlement chamber, and use the pump to pump from the bottom drains, to the SC, pass some filter media etc, and then to the pump?
Bottom drains, settlement chamber, bio media, outlet to pump, from pump to uv and then to waterfall? Will the pump suck water from the Bottom drain, via all this areas? (Leaving the sand filter out of the system)
Can i build a home made system for bio filtering, and a settlement chamber, that will work with the 0.45 kw pump, and how do i set it up so that the pump don,t over flow the areas?
I have some idea on how it should work, and how to get someone to build me a home made system, but i don,t know how to use the swimming pool pump to connect the whole idea.
Any help would be greatly appreciated. (Lots of questions, i know, but heck, as i said, new to this, and hooked already. Smile )
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Sandfilter help please Empty
PostSubject: Re: Sandfilter help please   Sandfilter help please EmptyThu Feb 10, 2011 11:55 am

Hi,

First of all the sand in the sand filter should be between 3-5mm.
You need to clean (backwash) regularly, about one every 3rd day.
Check the sand, if it is 1-1,4mm then replace it with 3-5mm sand. If you are using a normal swimming pool filter, the “finger” should be modified to accommodate the bigger sand.

I would suggest that you do not split the “pipe” before the Bio filter, like it is now, rather place the UV light after the Bio filter.
A bio filter should be cleaned once a year

The speed of the water over the bio filter media is no factor!

Using ball valves you could regulate the flow between the water fall, underwater return and the venturi’s ( I would also lift the venturis above the water line.)

Also read:

http://southafricankoi.11.forumer.com/viewtopic.php?t=729

http://southafricankoi.11.forumer.com/viewtopic.php?t=862
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Charissa

Charissa

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Age : 56
Location : Pretoria

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PostSubject: Re: Sandfilter help please   Sandfilter help please EmptyThu Feb 10, 2011 3:17 pm

Thanks Pieter, for your input. I do backwash, and have to do it daily, at times. The thing is, i travel regularly, and would be away for days at a time sometime, which makes it a bit of a hassle for someone else to maintain while i am away. I don,t mind maintaining the pond, but i would like to have a lower maintenance set up.
The sand is about 4mm in diameter, but it is extremely dirty, and full of organisms and fish poo, when i open it, even after only a day or two running. I removed it a few days ago, cleaned it very well, and had the same problem with output flow, two days later.
I am not sure of how the filter looks on the inside. I do know that we installed a pool at the same time, and though this is a smaller, grey filter, the pool one had white flat bars at the bottom of the filter. They do look the same, the filters, except for size.

The UV and bio filter set up was done by the guy that installed my filters and pump, after the uv light was damaged because the flow of the water, was too much. (Got water into the light, pushed past the O rings at the side).
I also did the Newbie thing, and over stocked the pond, i am sure, and being a woman and all Very Happy i don,t want to give the children away.
I decided to build a bigger pond with concrete next to this one, and solve that particular problem, but i have no idea how to go about connecting, and using my current pumps etc, with the new pond. Hence the question if i should build a settlement tank, and will i be able to use my pump etc with a settlement tank.
I wish i could draw u a picture, to make it clear, too new to explain the things i need to ask.
Any help and ideas on how to build the pond, and set up a low maintenance filter would be greatly appreciated.
PS, the venturi,s is at the top of the pond, with air flow to the water areas.
I will take a few photos, and post it, if it would help with the general idea on how to go about improving and building the new pond.
Thanks for your time.
Charissa
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PostSubject: Re: Sandfilter help please   Sandfilter help please EmptyFri Feb 11, 2011 1:10 pm

Charissa,

Ek het op 'n ander forum op gemerk dat jy Afrikaans is............die sand filter wat jy daar het kan baie goed as 'n Koi filter gebruik word, mits jy die groter sand gebruik en die "vingers" verander.

Ek gebruik die soort filters al jare!!!

http://southafricankoi.11.forumer.com/viewforum.php?f=33&start=0

Die beste wat jy dadelik kan doen is on die sand te vervang ( Koste vir 3-5mm sand is ongeveer R 120-00) verander dan die vingers.
As jy die nuwe sand ingooi; vul eers die filter half met water ander kan jy die vingers breek.

Sand filters is nou maar die een ding wat skoon gehou moet word as dit met 'n Koi dam gebruik word. Die grootste probleem is dat daar 'n hard "kors" onder die vingers in die sand filter gevorm word, wat verhoed dat die filter behoorlik werk of deur "backwash" skoon gemaak kan word.

Die probleen is ook dat as jou pomp te swak is om die sand "op te lig" dit ook nie skoon kom nie. en daarom moet jy dit een maal 'n maand die sand uitpak en weer terug sit om daarmee te help.

As jy nou die nuwe dam gebou het ( ek kan iemand voorstel om dit vir jou te bou)
kan jy na 'n " air conversion" kyk om te help wanneer jy die sand filter "back wash"
Die koste daaraan verbonde is ongeveer R 400 per sand filter plus die koste van 'n
"air compressor"

Sien: http://southafricankoi.11.forumer.com/viewtopic.php?t=949

Ek stel voor dat jy nadat jy die sand en die vingers verander het, jy elke dag vir mintsens 3 minute backwash en 1 spoel.
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pierrea

pierrea

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Age : 55
Location : Centurion

Sandfilter help please Empty
PostSubject: Re: Sandfilter help please   Sandfilter help please EmptyMon Feb 14, 2011 6:23 pm

Hi,

Ek het dieselfde probleem as jy ondervind. Ek het so jaar terug my totale filterstelsel oorgedoen en sederdien geen probleme met die stelsel nie.

Ek sien jy is in Pretoria. Jy kan my altyd kontak en kom kyk wat ek gedoen het.
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PostSubject: Re: Sandfilter help please   Sandfilter help please EmptyTue Feb 15, 2011 9:36 am

Pierrea,

Vertel ons bietjie wat jy gedoen of verander het.
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pierrea

pierrea

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PostSubject: Re: Sandfilter help please   Sandfilter help please EmptyTue Feb 15, 2011 8:01 pm

Pieter,

Ek sal net in kort opsom wat ek gedoen het en moreaand foto's ter illustrasie byvoeg.

Jy sal jou herinner dat ek so bietjie meer as 'n jaar terug baie gesukkel het met met ulchers en allerhande verwante koi siektes.

Ek het ook dieselfde probleem as Charissa gehad met 'n sandfilter wat aanmekaar blok en nie eers eenkeer 'n dag se backwash het gehelp nie.

Ek is die deur die wyse manne van die koiforum aangeraai dat my filtreerstelsel onvoldoende is.

Ek dink soos dit met menig leuke koi-entoesias gaan wat 'n nuwe dam bou word daar slegs na die bou van die dam gekyk en eers later word die filtreerstelsel saamgeflans, gewoonlik onvoldoende.

Die dam is 28000L. Ek het gehad 2 bottom drains na 'n settlement chamber, 0,75 speck porpoise, 2 sak swembad sandfilter (gryse), 25L bio chamber, 30w uv lig.

Ek glo die fyn finne het bygedra tot die verstopping.

Ek het die stelsel vervang met 'n 1,1kw Spech Badu Galaxy. Die vloei is baie meer as die porpoise pomp. 3 X speck koi sandfilters in parralel gekoppel. 2 X 50L bio chambers en 2 X 30w UV ligte. Ek moet byvoeg ek gebruik tans net een UV lig en sit hom tussen April en September maand af.

Die water is glashelder tot op die bodem. Ek toets die PH en Nitrate gereeld. Dit het in die afgelope jaar nog nie eenkeer afgewyk nie.

Ek is baie dank verskuldig aan die inligting en bydraes van elke lid op die forum.
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PostSubject: Re: Sandfilter help please   Sandfilter help please EmptyWed Feb 16, 2011 9:01 am

Pierre,

Ek onthou nou; het dit opgespoor onder:

https://koionline.forumotion.com/t1289-dirty-sand-filter

Ek is bly om te hoor alles is nou klopdisselboom!
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pierrea

pierrea

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PostSubject: Re: Sandfilter help please   Sandfilter help please EmptyWed Feb 16, 2011 8:24 pm

Soos dit maar gaan is die kamera se battery pap as jy hom nodig het.

Ek het die sommer met die selfoon geneem en dis reeds skemer.

Sandfilter help please 16022011070

Sandfilter help please 16022011071

Ek het 65mm pyp tussen die dam en die filtersisteem.

Al my konneksies is 45 grade
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Jack Bach



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Join date : 2009-06-17
Location : Montana, Pretoria

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PostSubject: Re: Sandfilter help please   Sandfilter help please EmptyThu Feb 17, 2011 8:12 am

Baie netjies gedoen Pierre. Die vermyding van 90 grade bends is 'n 'plus'. is jy returns na die dam ook 63mm?
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pierrea

pierrea

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PostSubject: Re: Sandfilter help please   Sandfilter help please EmptyThu Feb 17, 2011 8:35 am

Hi Jack,

Nee, van die sandfilters het ek die lyn gesplit na 2 x 50mm pyp. Dit gaan na die bio chambers dan UV. Beide lyne word weer gesplit. Drie gaan na invloei punte in die dam en een na die waterval.
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Neville

Neville

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PostSubject: Re: Sandfilter help please   Sandfilter help please EmptyThu Feb 17, 2011 1:07 pm

Posting removed




Last edited by Neville on Thu Feb 17, 2011 9:36 pm; edited 1 time in total
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PostSubject: Re: Sandfilter help please   Sandfilter help please EmptyThu Feb 17, 2011 5:34 pm

Die sand flter grootte maak nie saak nie, al die "vingers binne die sand filter word na ongeveer 25mm vernou wat verder gehalveer word deur die "gaatjies" in die vingers!

Verder weeg 'n 5 sak sand filter se "sand" 200kg wat moeiliker gelig word as die van 'n 3 sak (120kg) wanneer daar ge-"backwash". Die sand self veroorsaak dat die water vloei verminder word,
en die afstand vir die water deur die sand word ook verder en langer en dus digter!

Hierdie stelling maak glad nie vir my sin nie!

As die filterstelsel goed werk, waarom moet dit verander word in elk geval?
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Jaco

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PostSubject: Re: Sandfilter help please   Sandfilter help please EmptySat Feb 19, 2011 5:34 pm

Pierre, ek hou van jou setup.
Goed gedaan.
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Charissa

Charissa

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PostSubject: hi   Sandfilter help please EmptyWed Mar 02, 2011 8:44 am

Dankie almal vir die raad. Ek het die grys, 2sak sand filter af gehaal, en dit vervang met 'n swart 3 sak filter vir Koi dam. (as ek die verkoopsman kan glo) Sover het ek minder probleme met verstopping.
Nou nog 'n vraag, kan ek die 2 sak grys filter, aan die 3 sak filter koppel, iets soos wat Pierre gedoen het? Dit is nou as ek die vingers binne die filter doen soos wat voor gestel is?
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PostSubject: Re: Sandfilter help please   Sandfilter help please EmptyWed Mar 02, 2011 8:58 am

Charissa,

Ja , jy kan dit doen. Verkieslik nie inlyn nie ( die een na die ander een nie).
Verdeel die toevoer voor die sand filters, na die sand filters kan jy weer die water lyn saamvoeg.
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Charissa

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PostSubject: e   Sandfilter help please EmptyWed Mar 02, 2011 9:02 am

Dankie Pieter. Sal dit enige verskil maak aan die dam, of is dit net 'n onnodige verdere ding om te doen. Ek het die filter hier, word nie gebruik nie. Op die oomblik het ek nog nie probleme met die sisteem soos dit is nie, water gehalte is goed env, maar ek is maar nuut, so kan verkeerd wees.
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PostSubject: Re: Sandfilter help please   Sandfilter help please EmptyWed Mar 02, 2011 4:13 pm

Hi,

Ek glo daaraan dat jy nooit genoeg filtrasie kan het nie. As dit ek was sou ek dit gebruik het.

Gaan loer 'n bietjie hier:

http://southafricankoi.11.forumer.com/viewforum.php?f=33

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Lanie



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PostSubject: Re: Sandfilter help please   Sandfilter help please EmptyWed Oct 12, 2011 9:05 am

Charissa wrote:
.. Dit is nou as ek die vingers binne die filter doen soos wat voor gestel is?

Hi almal, wat moet mens modify aan die vingers? of waar kry ek 'koi' vingers?

Ek's nuut hier op die forum en ook in die koi stokperdjie verdryf.. Embarassed
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Admin
Admin
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PostSubject: Re: Sandfilter help please   Sandfilter help please EmptyWed Oct 12, 2011 9:14 am

Hi Lanie

Welkom by die forum.

Die vingers kan redelik maklik uitegehaal word en dan kan die gaatjies groter geboor word of mens kan selfs met 'n grinder ekstra gleufies maak.

Die swembad sandfilters is vir die baie fyn sand en verstop maklik en die koi filters se gaatjies is vir gruis.

Daar is plekker wat die vingers verkoop maar ek weet nie waar nie.
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