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Old 31-08-2015, 11:57 PM   #41
DragonFireSG
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solid bro.

How deep is it?
about 1.6m
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Old 01-09-2015, 10:16 AM   #42
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about 1.6m
Bro, for safety reasons, better fence it up in case of children getting too close.
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Old 01-09-2015, 10:29 AM   #43
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Tying rebar this morning. Getting closer.

bro...you have 2 layer of base? as in your bottom drain is sitting on a cement base or soil?
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Old 01-09-2015, 10:33 AM   #44
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A bit about the filter hardware/design.

Mechanical separation is handled by this work of genius. Chinese made, but of Dutch design (Estrad BV). It removes suspended waste like koi poop. Automatically. No back breaking and time consuming work cleaning filter brushes and japanese mat. The waste is removed from the water stream. It doesn't get a chance to decay and release more ammonia into the pond.
There is a small settlement chamber preceding this filter to drop heavy stuff like pebbles out of the water stream and catch leaves.



Mechanically cleaned water is pumped to a built to order shower from Florida-based Deepwater Koi. This is designed for 3cf of MP2C. The pressurised manifold ensures even distribution of water across all the MP2C.

This system needs almost no maintenance, being fed by water filtered to under 50 micron.



And that is all... A simple 2-stage filter design for ease of maintenance and high performance.

Look very impressive...would like to see it in action!
It can be a good alternative (or replacement!)to all existing filter design!

My only concern is the algae....not sure whether the algae in our climate will choke the drum design. This is one of the common problem for using the US and European design filter.
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Old 01-09-2015, 11:56 AM   #45
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@streetsmart

A pool fence is planned. It will be a removable job for when kids are visiting.

Something like this: http://protectachild.com/

There will also be a grab bar put into the pond to facilitate exit if someone falls in. It will be one extra thing the koi might injure themselves on, but is a necessary risk as the pond is a little too deep to climb out of unless one is quite fit.

The ledge around the base of the pond was also put there to provide a foothold for someone without the physical strength to climb out.

@nutx

Under the BD is concrete stabilized soil. We had to dig a trench in that as the 6" sweep elbow we used has a 2 ft span. It and the rest of the base was sealed in concrete. The wire was then built on top for the reinforced base.

As for the issue with algae, a UV light inside the mechanical filter toasts the drum 24x7. That should take care of the bio film growth on the drum. I'll also be running the system at just 1/2 to 3/4 the 15000gph max capacity to allow more buffer.
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Old 01-09-2015, 12:06 PM   #46
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@streetsmart

A pool fence is planned. It will be a removable job for when kids are visiting.

Something like this: http://protectachild.com/

There will also be a grab bar put into the pond to facilitate exit if someone falls in. It will be one extra thing the koi might injure themselves on, but is a necessary risk as the pond is a little too deep to climb out of unless one is quite fit.

The ledge around the base of the pond was also put there to provide a foothold for someone without the physical strength to climb out.
Good to know you've considered the safety aspects. I have a relative in Malaysia that had a koi pond with a low fence around it. How ever it did not have steps. One day His Doberman jumped/fell in and drowned while they were out.
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Old 01-09-2015, 12:08 PM   #47
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Yeah... Just read a sad post by a forumer over at Koiphen that had an elderly pet dog fall into his pond and drown when he was out.

Sad.
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Old 01-09-2015, 03:47 PM   #48
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Do u mind pm me who u ask for doing ur pond and how much he charge? I am thinking og makeover my rented pond soon.
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Old 01-09-2015, 04:08 PM   #49
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TS. big project. thanks for sharing..
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Old 01-09-2015, 07:05 PM   #50
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nicely done...
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