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RDF and bio filter installation

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Re: RDF and bio filter installation

Post by Admin on Fri Sep 23, 2011 9:26 pm

I posted these here also Sweetie ... demonstrating RDF performance capabilities.... Very Happy

Not sure if they are in the correct order though Question




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Re: RDF and bio filter installation

Post by HAN on Fri Sep 23, 2011 10:20 pm

Great videos,the silt in the bucket is fine and some, barely dust i would say.
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Re: RDF and bio filter installation

Post by alank on Sun Sep 25, 2011 8:43 am

OK Mio, I have taken on board what you have said about bacterial blooms etc. I am now convinced that the blooms are holding the fines in suspension in the water. This was my water yesterday morning:

The thing to kill bacteria is a UV light, mine has been off for a while whilst the RDF was being fitted, also I have read that you don't need a UV if you have a Bakki shower. Total Bull sh**.
After 36 hours I now have this, bear in mind the water is 7 feet deep and I only have a spot light to illuminate the scene.

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Re: RDF and bio filter installation

Post by alank on Sun Sep 25, 2011 8:55 am

Also, there are no bits of poo or fines suspended in the water. They sink to the bottom within a few minutes. The transformation is incredible. My pond is well shaded and gets very little sun. I occasionally had green algae tinge and I would switch the UV on for a week or so to get rid of it.

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Re: RDF and bio filter installation

Post by Admin on Sun Sep 25, 2011 9:14 am

alank wrote:Also, there are no bits of poo or fines suspended in the water. They sink to the bottom within a few minutes. The transformation is incredible. My pond is well shaded and gets very little sun. I occasionally had green algae tinge and I would switch the UV on for a week or so to get rid of it.

WOW ? Very Happy

How long was the UV Off for Alan ... and when did you switch it back on ?


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Re: RDF and bio filter installation

Post by alank on Sun Sep 25, 2011 7:13 pm

It has been off for a few months, I didnt have it on very often with the Nexus as the water was fairly clear. It was not on with the glass filter. Whilst changing the filters, I used pumps in the bottom of the pond to feed the nexus at the side of the pond. This lead to a build up of fines etc in the pond which the bacterial blooms must have been feeding on.

I switched it back on at 18:00 on Friday so it was on for 27 hours before I took the above video. I left the RDF filtering 51000 l/h for this period. The RDF has taken out all of the fines generated by this process as the water in the bio tank is crystal clear.

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Re: RDF and bio filter installation

Post by Admin on Sun Sep 25, 2011 7:32 pm

alank wrote:It has been off for a few months, I didnt have it on very often with the Nexus as the water was fairly clear. It was not on with the glass filter. Whilst changing the filters, I used pumps in the bottom of the pond to feed the nexus at the side of the pond. This lead to a build up of fines etc in the pond which the bacterial blooms must have been feeding on.

I switched it back on at 18:00 on Friday so it was on for 27 hours before I took the above video. I left the RDF filtering 51000 l/h for this period. The RDF has taken out all of the fines generated by this process as the water in the bio tank is crystal clear.

Ponds are NOT Natural Alan ....

The more processes occurring in them ... the greater the biological/biochemical load.

Suspended Algae whether visible or NOT will be in situ in the millions unless eliminated by one means or another ... UV`s are the most effective means followed by O3.

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Re: RDF and bio filter installation

Post by alank on Sun Sep 25, 2011 7:56 pm

Is 03 generated by a machine of some description? Any links?

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Re: RDF and bio filter installation

Post by Admin on Sun Sep 25, 2011 8:14 pm

alank wrote:Is 03 generated by a machine of some description? Any links?

Malcolm Green is the UK Koi Pond Ozone Guru .... but it is expensive to run via bottled O2 Alan...

http://www.koicarp.org.uk/koi_water_garden_ozone.htm

Combinition UV/O3 Units are also available Arrow http://www.koi-fish.co.uk/acatalog/UV_Ozone.html

What UV are you running atm .. my personal preference is TMC Arrow http://www.tmc-ltd.co.uk/commercial/uv-sterilisers.asp


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Re: RDF and bio filter installation

Post by alank on Mon Sep 26, 2011 6:52 am

All interesting info, maybe one day...

Today the water is even clearer Laughing

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Re: RDF and bio filter installation

Post by Admin on Mon Sep 26, 2011 6:56 am

alank wrote:All interesting info, maybe one day...

Today the water is even clearer Laughing

What UV are you running Alan ? reducing the flow will ensure more dwell time = greater `Killing`efficiency.

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Re: RDF and bio filter installation

Post by alank on Mon Sep 26, 2011 7:13 am

I use 2 Proclear 55 w units with reduced flow through each.
http://www.absolute-koi.com/prod212.html

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Re: RDF and bio filter installation

Post by Admin on Mon Sep 26, 2011 7:18 am

alank wrote:I use 2 Proclear 55 w units with reduced flow through each.
http://www.absolute-koi.com/prod212.html

Me too the Proclear 55 Very Happy

I would recommend you switch these off during treatment Alan despite some claiming this isn`t neccessary ... wiser to err on the side of caution IMO Wink

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