Koi pond! Really confused.


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I sure do hope so , my liner is 25 feet by 30 feet. So you mean by enlarging the actual pond? I was sorta trying to avoid doing so.

I think Ive decided not to do shelves since the wife does not want the pond any larger then what it already is (she was kind of shocked) Oh well...
I think you are overthinking this.
Adding some shelves would be no big deal.

The pond size will only increase by the width of the shelf. So, if you dig a 10 inch wide shelf into what you already have, your pond will only widen 10 inches. No one will know the difference. Of course you'll need enough liner to do this. But, again, only 10 inches.

You don't need shelves all around the pond. Just do one side if you like.

Or don't do any shelves, that's your choice.

I'll note:
I have added shelves after the fact. After the pond was full of water.
I pulled back the liner and added soil, building a shelf.

Oh, and never, ever cut any "excess" liner after building your pond. Roll it, fold it, cover it with soil or rocks, but never cut it. You never know when you might need a little more or if things settle you can run short.
 
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And while were talking shelves...
If you want a natural edge around your pond without any ugly liner showing between the water surface and the ground, here's what you do....
Create a very shallow shelf around the whole pond.
After the liner is in place, lay large stones on that shallow shelf. The stones should be partially submerged. Then stack stones on top of those, stepping back away from the water. Keep stacking stones stepping away from the pond. You will have a more natural looking edge without any ugly liner showing.
 
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That is a good point, I can just do a shelve on one side if I really do want potted plants.

So if I am understanding correctly , I should relax just a little! My next step should be what exactly? Any need for fine gravel or sand for the bottom underneath the liner to make the pond 100% level?
 
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And while were talking shelves...
If you want a natural edge around your pond without any ugly liner showing between the water surface and the ground, here's what you do....
Create a very shallow shelf around the whole pond.
After the liner is in place, lay large stones on that shallow shelf. The stones should be partially submerged. Then stack stones on top of those, stepping back away from the water. Keep stacking stones stepping away from the pond. You will have a more natural looking edge without any ugly liner showing.
Shallow shelve? as in the shelve is the same height as the water basically?
 
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Shallow shelve? as in the shelve is the same height as the water basically?
Just slightly under the water surface. Just deep enough so that you can place large stones on it which will be partially submerged. The liner will be hidden under the large stones at the transition from water up to the ground.
@addy1 has a drawing she posts. I'll see if I can find it and link it.
 
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Very true! And how thick would it have to be? Im assuming size of the rock itself. Unless I do a flagstone but that would not really provide a very natural feel as much as actual rocks would look.
Just maybe a few inches deep really. Just keep in mind that there will be some evaporation. So if it's too shallow, you might get liner exposure if the water level drops due to evaporation.
 
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We've seen pictures of ponds that could be really nice looking, but the liner is completely exposed between the water surface and the ground, ruining the look.

Most of us here strive to make our ponds as natural as possible in looks, function and water chemistry. An exposed liner defeats that, as far as looks go.
 
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Just maybe a few inches deep really. Just keep in mind that there will be some evaporation. So if it's too shallow, you might get liner exposure if the water level drops due to evaporation.

Awesome I do understand and will be implementing this. Any advise for the bottom of the pond underneath the liner? Should I put some sand or fine gravel to make sure the pond is 100% level?
 
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hould I put some sand or fine gravel to make sure the pond is 100% level?

Not at all necessary unless you want the sand as a cushion between the liner and soil.

In fact, I would not make the bottom flat at all. I would slope it to one point so that if you ever need to drain, you can place your pump in that one spot and get every last bit of water out.
 
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Not at all necessary unless you want the sand as a cushion between the liner and soil.

In fact, I would not make the bottom flat at all. I would slope it to one point so that if you ever need to drain, you can place your pump in that one spot and get every last bit of water out.

Slooping towards the skimmer? or does not matter at all?
 

addy1

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Here you go.... a picture is worth a thousand words....

Post in thread 'Help for a newbie' https://www.gardenpondforum.com/threads/help-for-a-newbie.31153/post-493925
Here is my fake fish rendition of a rock hiding liner shelf. Gray is rocks
rock edge_LI.jpg
 
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I have used both, have both here at home. My HDRPE is tough stuff, yeah a bit harder to work corners but it is tough.

My small ponds, under 1000 gallon , I used epdm, have had to fix a few critter tears, luckily up on the edge. Not as tough. Looking for a leak in one currently, HDRPE pond no leaks. The epdm ponds are younger than the HDRPE pond.

Thank you for this information... I noted that...
 
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What is the best type of tubbing? I will be plumping and installing the tub underground.

I see some plastic tubs, vinyl tubs, flexible pvc tubs ect..
 
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Opss , correct

TUBES***
Ok, so most of us use PVC pipe. It's inexpensive and easy to work with.
If you need guidance on how to install pvc pipe, we can help you with that.

Then there's areas where you may need a flexible hose and the best thing for that is schedule 40 flexible PVC. It's totally compatible with all standard schedule 40 ridgid PVC fittings and also the primer and glue. It comes in white or black. I like the black for inside the pond. It's less noticeable.

Both standard PVC and flex PVC can be buried if you like.
I personally have all my plumbing within the pond and bog, so if anything leaks, no water can escape the system.

Don't waste your money on the common corregated "pond hose". It wont last very long and you'll get frustrated with constant leaks.

Try to incorporate a means of easy disconnecting of your pipe/pump for winter removal or general maintenance. The best thing for this would be a union.
Second choice would be a rubber Fernco coupling.
 

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