Time has flown by since my last update about the pond build here – http://nishikigoi.life/2019/01/27/my-new-pond-build-part-2/.

In the just under 4 weeks since I returned from the All Japan Koi Show, and whilst there have been no updates here, the pond build has updated significantly, the pond is now running, has Koi in it, and there are just a few bits left to complete the project.

The first thing to do was to construct the frame which would be decked above the bottom drain pipework.

Wooden frame to support decking above bottom drain pipework

Wooden frame to support decking above bottom drain pipework

Decking platform above bottom drain pipework

Decking platform above bottom drain pipework

I decided to use the Evolution Aqua Eazy Connectors for the majority of the pipework joins,. the reason being the flexibility they offer for any changes in the future.  As I detailed in an earlier post I may at some time in the future add a shower on the return to the pond.

EA Easy Fittings for return pipework

EA Easy Fittings for return pipework

Initially I had chosen to use rubber connections on the bottom drain run  as well, however I got concerned for 2 reasons.  Firstly, because they would be completely under the decking, I wouldn’t be able to monitor or check them easily.  Secondly, if they did fail for whatever reason, then the result could be catastrophic as they would be completely below the water level of the tank.

Rubber fittings fitted to the original bottom drain pipework

Rubber fittings fitted to the original bottom drain pipework

At the last minute I switched the rubber fittings for solvent weld fittings.


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Final bottom drain pipework with solid pipe fittings

Final bottom drain pipework with solid pipe fittings

The the bottom drain glued and tested for leaks, the nexus was hooked up to the bottom drain line and it was time to fill the tank.  Thanks to Manor Koi (www.ManorKoi.com) for the loan of the water meter.

With the tank filled to operating level of 3″ below the top it came out at 1020 gallons.

The Automatic part of the Nexus proved simplicity itself to fit, taking just 90 minutes.

Tank filled and system running

Tank filled and system running

Automatic Nexus Cleaning System

Automatic Nexus Cleaning System

On Thursday 21st February the first 6 members of the ‘suicide squad’ were introduced to the pond and the filter seeded with EA’s Pure+ Filter Gel.

EA Pure+ Gel added

EA Pure+ Gel added

The initial fill of water was dechlorinated with liquid declor, thereafter a tap water purifier has been added and used for top ups.


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Vyair water purifier

Vyair water purifier

On Tuesday 26th February I swapped 1 litre of K1 Micro from the EazyPod Automatic on that’s been running on the main pond for 18 months – http://nishikigoi.life/2018/03/15/evolution-aqua-eazypod-automatic-review/.

Mature K1 micro added

Mature K1 micro added

On Thursday 28th February a Pure Pond Bomb was added to the Nexus.  I’ve used the ‘bomb’ previously when I installed EazyPod and it seemed very effective.

EA Pure Pond Bomb

EA Pure Pond Bomb

Now it’s just a matter of time waiting for nature to take its course, aided by the 3 things done above I hope.  With the water temperature holding at 12c the filter isn’t really likely to kick into life too quickly, however the test kits show that things are starting to happen.

Ammonia level of approx 0.2mg/l

Ammonia level of approx 0.2mg/l

Tiny hint of pink colour on nitrite test kit

Tiny hint of pink colour on nitrite test kit

The suicide squad, ranks swelled to 10, have settled in, knowing exactly where food comes from when I approach the tank.

'Suicide squad' have learned where the food comes from

‘Suicide squad’ have learned where the food comes from

With the system functioning my thoughts are firmly on the summer and the real use of the tank, more of which I’ll detail in another update….


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