New pond liner and filter advice please?


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Hi to you all.
I’ve recently moved house and have 2 Koi and 6 goldfish in a holding pool with my old green genie filter.
We have a digger in next weekend to dig a new pond.
It’s probably gonna be 4m x 3m and a metre deep one end stepping back to 200mm ish for wildlife to get in.
The pond will be up against my garage which has electrics.
Questions are what is the best way forward regards type of liner and underlay as I would like to have stones and pebbles on the liner rather than see black liner.
Also the filter system. Some say stay well clear or pressure filters and go filter box like Evolution etc.
So some of your best advice would be very much appreciated thank you!
Chris
 
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I’m new to the forum please be nice
Only nice people here!

The standard most used liner material you'll find is 45 mil EPDM with it's matching non-woven underlayment.
Some, who like stones in their pond, will add another layer of underlayment material on top of the liner to protect it from the stones. It also provides a great place for beneficial bacteria to colonize.

There's another liner material called HDRPE, which is much lighter in weight and costs less.
I got my last HDRPE liner online from American Talapia. A 20 ft X 15 ft piece was $140 (U.S.), with free shipping.

As far as filtration, I tried a lot of them over the years. Store bought, homemade, etc.
A lot of time and money wasted.
Then I was introduced to bog filtration by @addy1.
You'll find that a lot of us here only filter with an up-flow wetland bog. It cleans the water and provides a nice area full of plants. The big plus is that a bog is 99% maintenance free. No filter pads to clean. A huge plus!
 
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Only nice people here!

The standard most used liner material you'll find is 45 mil EPDM with it's matching non-woven underlayment.
Some, who like stones in their pond, will add another layer of underlayment material on top of the liner to protect it from the stones. It also provides a great place for beneficial bacteria to colonize.

There's another liner material called HDRPE, which is much lighter in weight and costs less.
I got my last HDRPE liner online from American Talapia. A 20 ft X 15 ft piece was $140 (U.S.), with free shipping.

As far as filtration, I tried a lot of them over the years. Store bought, homemade, etc.
A lot of time and money wasted.
Then I was introduced to bog filtration by @addy1.
You'll find that a lot of us here only filter with an up-flow wetland bog. It cleans the water and provides a nice area full of plants. The big plus is that a bog is 99% maintenance free. No filter pads to clean. A huge plus!
Great advice thank you.
Can you recommend places for info on bog filtering please and it’s design?
 
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After you check out addy's bog showcase, check out my bog add-on thread...

 
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Only nice people here!

The standard most used liner material you'll find is 45 mil EPDM with it's matching non-woven underlayment.
Some, who like stones in their pond, will add another layer of underlayment material on top of the liner to protect it from the stones. It also provides a great place for beneficial bacteria to colonize.

There's another liner material called HDRPE, which is much lighter in weight and costs less.
I got my last HDRPE liner online from American Talapia. A 20 ft X 15 ft piece was $140 (U.S.), with free shipping.

As far as filtration, I tried a lot of them over the years. Store bought, homemade, etc.
A lot of time and money wasted.
Then I was introduced to bog filtration by @addy1.
You'll find that a lot of us here only filter with an up-flow wetland bog. It cleans the water and provides a nice area full of plants. The big plus is that a bog is 99% maintenance free. No filter pads to clean. A huge plus!
regards a bog and planting. Most plants listed in that thread seem to require non water logged ground. Do any of you have advice for planting in a bog please?
 
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regards a bog and planting. Most plants listed in that thread seem to require non water logged ground. Do any of you have advice for planting in a bog please?
 

brokensword

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regards a bog and planting. Most plants listed in that thread seem to require non water logged ground. Do any of you have advice for planting in a bog please?
Creeping Jenny, watercress, canna, arrow plant, yellow flag iris, Louisiana black gamecock iris, parrot's feather, penny wort, forget me nots,horsetail, papyrus, mini horsetail, hosta, impatiens, and monkey flower: think I got all of them (in my bog)!
 

addy1

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water willow, pickerel rush, lizard tail, obedient plant, marsh bentomy, mint, lirope
 
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I’m new to the forum please be nice
Thats asking a lot
Most here have a bog filter or want one
EPDM rubber or
HPDRE i believe it is
I like 8 oz non woven needle punch geotextile under and over the liner
 
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