Thread: Mikes new pond build

the only thing i would add regarding quoted K1 filter ratios which are all based on EA's use of K1 in a nexus.

there is more to a biological filter than just ammonia and nitrite processing.
if that were the case as soon as you had cycled a filter a pond would be fully mature.

the biofilm is a living eco system in it's self,
with many different types of bacteria and microscopic life living with, and off each other.
that takes years to fully mature

so imo you can't have too big a filter...
even if the pond was 10,000 litres and the filters were 100,000 litres with 50,000 litres of K1

and yes, the pic below isn't the pond.... it's the bio chamber

Blimey that's a bit much. Having a window on a bio filter lol.

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Originally Posted by Twhitenosugar

Blimey that's a bit much. Having a window on a bio filter lol.

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i dunno..
in my case the window worked out cheaper than the sleepers would have...

i'm trying to remember where i got that pic from, but the pond was a hell of a size too i think....

I've seen a few large monster aquarium tanks with windows into the moving bed. It's quite mesmerizing watching it turn over constantly.

https://youtu.be/VS1HuwKYtYw

Apologies for the blokes voice.

Originally Posted by Mikeh83

Agree with that Dave,

Ha that photo is a guy called Lee it was a 2k gallon grow on he converted it to a bio for his 7k gallon pond..


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I need a pond extension! His bio chamber is the size of my pond ! Jesus !!

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sorry to spam your build thread mate
but just saw this video of that 2000 gallon bio on lee hadfields channel at 18:49 in with 1500 litres of K1 in it!

Wow, some set up.

Originally Posted by Mikeh83

If anyone sees any good deals on moving bed media let me know


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Have a look at the old 'similar to k1' media thread. Look for the k1 alternative that was very good .
https://www.koiforum.uk/water-treatm...urglar+similar

Check out the cheap versions on ebay. Look for the one with the centre piece.
Under the microscope it was certainly equivalent to K1', maybe better due to added surface area of centre section. Other alternatives were shite.

Here's some pretending to be K1, which inadvertently looks like the good cheaper version.
https://www.ebay.co.uk/itm/175664419...mis&media=COPY

You can buy it really cheaply from ali express, but the minimum quantities are quite high from memory.

I would say the K+ is better than normal K1.

Micro K1 will offer even more surface area for the same volume, butnot easy to find.

Thanks for suggestions, I think I will end up just adding my matured media

50L k1,
25L hel x 13
30L oase pond pads

Then will Chuck another 100L k1+

I’ll likely then add a 50L bag each time I add a new koi.


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When Sam p got some k+ was talking to a dealer about it . And price per surface area the k1 came out best bit more money but lots more surface

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Originally Posted by Mikeh83

If bio space is limited pond pads are imo far superior for surface area


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Did look at adding a few liters to my nexus . Think i spoke to you about that last time this subject came up

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