Expand my pond


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Hi . I thinking of making my pond bigger by maybe 60% . I d prefer to attach new liner to the existing liner and maybe have the extension higher than the existing pond. Is there someone who has done something like this successfully?or maybe a site I can use that has step by step instructions. My pond is roughly 7ft long by 5ft wife , I want to keep the width the same but lengthen it to about 4 ft or so , depth would be 30 inches or so.
 
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addy1

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here is a thread about seaming. If higher than the other pond you might not need to seam, just make sure there is enough of a drop.

 

TheFishGuy

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I have seamend liner beofre, but only on a stream, so the water was just slowing over it, I just bought seam tape, cleaned the liner with some household cleaner, and applyed it! ( then just as an extra added some gorrila tape meant to be water tight )
 
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Great videos and good information, it certainly helps , I’m thinking my big problem is where I want to extend the liner is a semi circle not a straight line and it’s only 4ft from 1 end of the semi to the other. I need to consider maybe just adding a 2nd small pond close to my original and finding a way to link them , maybe a drainage pipe or something
 
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Hi Frankie...We added on to our pond 22 years ago... We made it level with the existing pond
so that the fish would have an expanded swim area. After we dug the hole for the new pond,
we dropped the water in the existing pond about 18” this way the fish could stay in the water
while we were bonding the two liners together.
It’s hard to explain without pictures, but we attached the two lines only at a section that is
about 3 feet wide...

If you’re interested in how we did it, I’ll try and give you as much guidance as I can...
Also, think about making it level with the existing pond for extra room for the fish...

Please provide a pic of your pond, it would help in design ideas.
 
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Hi Frankie...We added on to our pond 22 years ago... We made it level with the existing pond
so that the fish would have an expanded swim area. After we dug the hole for the new pond,
we dropped the water in the existing pond about 18” this way the fish could stay in the water
while we were bonding the two liners together.
It’s hard to explain without pictures, but we attached the two lines only at a section that is
about 3 feet wide...

If you’re interested in how we did it, I’ll try and give you as much guidance as I can...
Also, think about making it level with the existing pond for extra room for the fish...

Please provide a pic of your pond, it would help in design ideas.
Hi I would really appreciate it that , I’m very new to this so if I’m not 100% confident I can do it I won’t , my existing pond is only a few months old but all is good so don’t want to ruin it. I will dig out a few photos shortly and add a few details.
 
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Hi Frankie...We added on to our pond 22 years ago... We made it level with the existing pond
so that the fish would have an expanded swim area. After we dug the hole for the new pond,
we dropped the water in the existing pond about 18” this way the fish could stay in the water
while we were bonding the two liners together.
It’s hard to explain without pictures, but we attached the two lines only at a section that is
about 3 feet wide...

If you’re interested in how we did it, I’ll try and give you as much guidance as I can...
Also, think about making it level with the existing pond for extra room for the fish...

Please provide a pic of your pond, it would help in design ideas.
 

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My plan is to extend at the end where the pix have been taken , it’s roughly 4ft wide there, the pond is 7ft long and different depths ranging from 3ft 4” at the far end to 2ft 4” at the near end excluding shelves. I open to Any suggestions on how to extend, the plan now is to add roughly another 4ft length and 4ft width to the pond, the depth will depend on how I find it when I start digging but at least 2ft
 
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Could you provide a shot of the yard in front of the pond. You could extend your
pond out more into the yard and make it a longer run...

Our Dog leg extension is about 6’ wide x 13’ long.
Also, where it is pieced together it’s only about 18” wide x 12” deep ...so in actuality
the piecing area is small...just deep enough so that the fish can swim through.

Here is a video of the dog leg.
hope the video works...


 
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Stunning , absolutely gorgeous pond , the water looks crystal clear, even Your foliage is to die for. It puts my little effort to shame. I’m away from home for a few days so unable to take anymore photos, not sure I want to show any more after looking at yours lol joking
 
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You can easily make yours stunning...The front of the pond where you have the white slate
is where you can add on to your pond...you only need to pierce a width of about 10 - 12” across.

You drop down the water a bit to be able to work on the seaming...you must clean the existing
liner ‘very well’ ( I believe we used alcohol to clean it) we seamed together the two liners with the tape...
then we folded the tape underneath to make a flap...then we applied silicone between the tape
and the flap (regular silicone -we called Dow Corning to ask if we could use regular silicone)
after a couple of days- (I don’t remember the actual curing time for the silicone) we filled up
the dog leg. We also have a shelf all around our pond...the shelf is totally rocked up to
ground level ...this is why no liner is showing...
I’ll get you a diagram of this.
First you have to decide how big you want your ‘dog leg’ ...ours is 13’ long.

Stunning , absolutely gorgeous pond , the water looks crystal clear, even Your foliage is to die for. It puts my little effort to shame. I’m away from home for a few days so unable to take anymore photos, not sure I want to show any more after looking at yours lol joking
 
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This is the layout...we started out with an irregular kidney shape then added the dog leg...
Also, this is what I mean about a shelf...it doesn’t look like a shelf - the rocks take care of
that. Note: Pond two - is the dog leg...
t
29CB8F0D-DDDA-4DCE-B318-3868482051D0.png
9A869E52-F9E9-4443-A70C-27CFFD9234C8.png
 
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This is the layout...we started out with an irregular kidney shape then added the dog leg...
Also, this is what I mean about a shelf...it doesn’t look like a shelf - the rocks take care of
that. Note: Pond two - is the dog leg...
tView attachment 131954View attachment 131956
Here is another video...to the left of the dock is the pieced area.
You can see how narrow the passway between the two areas is.

If my yard and pond looked like yours I think I would live out there instead of inside. It is spectacular!
 
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The biggest challenge will be the folds in the liner. Where it is not straight like you said there will be folds and to be honest with you. i would use this opportunity to fine tune your skills. i would bet you learned a lot from your build and if you ask here and look at other builds you can learn how to hide the liner and make the project look natural. You can substitute the indoor out door carpet for some rock or even a tree stump or log. the pond is not that big where a new liner may be your best bet instead of trying to seam.
 
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Right Iv come up with an idea , I hope will work , my 2nd pond will sit right beside my existing pond and to link them I can use a 2ft length of pvc pipe with an elbow or curve dipping into the water of both ponds, the actual pipe will rest on ground level in between the ponds. The pipe will be 12” dia. See photos. Will this work ?
 

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Jhn

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Right Iv come up with an idea , I hope will work , my 2nd pond will sit right beside my existing pond and to link them I can use a 2ft length of pvc pipe with an elbow or curve dipping into the water of both ponds, the actual pipe will rest on ground level in between the ponds. The pipe will be 12” dia. See photos. Will this work ?
Is this going to be how water gets from one pond to the other?
If so, It will work until air bubbles get caught in the top of the pipe breaking the siphon. To be honest doing it that way makes it more trouble than it is worth.

I would either as was suggested seam the liners together or just buy a new liner that covers the whole new pond. Or if you are going higher with the new pond just lap the upper pond liner over and into the lower pond as long as you have enough lap over the water shouldn’t escape, no seaming necessary.
 

addy1

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How about having the pipe below ground with a elbow heading up, have the elbow right at water level. I bet you could use a big pipe clamp, some sealant and make it work. Maybe................lol

But getting a new liner would work a bit better. Make your new pond a bit higher as said above.
Not the best drawing lol Not even sure it would work either.
pond.jpg
 
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Is this going to be how water gets from one pond to the other?
If so, It will work until air bubbles get caught in the top of the pipe breaking the siphon. To be honest doing it that way makes it more trouble than it is worth.

I would either as was suggested seam the liners together or just buy a new liner that covers the whole new pond. Or if you are going higher with the new pond just lap the upper pond liner over and into the lower pond as long as you have enough lap over the water shouldn’t escape, no seaming necessary.
My idea is more a way that my fish can swim from pond to pond. My existing pond gives me no trouble whatsoever so I’d rather not disturb it, add and glueing a second liner scares me , I’d prefer not to do it hence my idea of linking using pipe.
 

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