Backyard Aquaponics
A place to discuss aquaponics

I'm planning to build a fish pond and want to use a plastic liner. Is there anyone who has done this and has advice?

I realize I'll have to put rocks/bricks around the top edge. However I was wondering if it was a good idea to also put a 4" concrete ring to provide extra support, then have the liner and the mortar the rocks in place.

If you're not sure what I mean, hopefully the pics below will make it clearer (my pond will be much larger than the one pictured).

I think that seems a bit overkill, you're concerned about the liner slipping into the pond or shifting in some way?

Personally I would have put the rocks the other way round (short side to the pool) and just cemented the gaps.
Make sure no stones or anything sharp under the liner. I know it sounds obvious but have seen it happen

Thanks for the suggestions. Any idea what is the best type of liner for edible fish?

I checked guides on the web and none of them showed a concrete foundation. Nonetheless I think it's a good idea, as ppl are likely to stand on the edges.

The guy doing the pond is experienced and it's for his own place, so he wouldn't be trying to make extra work for a quick buck.
If you look closely, you'll see pegs in the foundation. These are chopsticks used to make sure everything is level, as can be seen in the pic below.


We will put carpet underlay underneath My plan is to have a nice looking pond that's also used for AP. There is a gentle slope below the pond, so it's perfect for CHIFT PIST.

Here is a pic of the finished pond

not bad link even though its an ad http://www.tanksaustralia.com.au/tech_li.htm

Sleepe, thanks. I'm actually planning to make a pond using liner, putting Tank in the heading is a bit confusing. I'm also in Thailand, so it will have to be a local product.

The local product should be one of those materials (hopefully)
The manufacturer should tell you which one.

i can definiatly recomend a epdm liner, ive used it right through my system andits verry tuff and food safe + UV stablised so should last ages
even though i probably didnt need to i put carpet underneath mine ( is a good way to get rid of the stuff )
i got mine from creative pumps online but ime sure there are other vendors around.

also ive built a pond in a simlar fashion to the way you have described and the concrete footing ring is not a bad idea wish i had the idea here cause we are on sand and it all sagged in over time

Cheers
pete

If it doesn't cost much and it gives you more peace of mind then I think it's a good idea. EPDM is the best from what I've read. Our exchange student from two years ago is back in Thailand (Khon Kaen), can you say hi for us?

took a while to post but yes we did our first pond using PL
I covered the plastic with gravel cement mix ( splodge)
...and pushed in some stones

You have a nice yard. We tend to cover everything with grass then spend the rest of our lives mowing it and complaining about mowing it.

Hi Plachon

Love the pics of the pond under construction, Thailand is one of my 2 favourite places on earth, the other is OZ, Ive never built a pond using a strip footing like he is, its a great idea and my next one will be done this way. I love the statue of Ganesh in the background I have just got a sitting Buddha today for my small pond in the front yard, the Buddha sits around 3 feet high and then on a mound, its keeping me busy until my growbeds arrive very soon. Pond liners are really expensive here especially the good rubber ones

Bree









p

Grass u say
I saw Peter Cundall down at the gardening Australia show in Sydney, oh how he hates grass, wasted nutrient sucking stuff, a waste of space that could be utilised for growing something edible and worthwhile, I must admit I agree. Actually live on stage he is a really funny bloke and he is very inspirational and solid thinking. Anyway just thought Id have a comment on grass, I could go on but alas enough dribble from me

Bree

I've read similar. How do you join EPDM? Can it be glued? So far I've found PVC at .25m thickness and a reasonable price.



Have you been to Khon Kean? The ppl there are really nice and easy going, very hospitable. If you ever get the chance go visit and then go further north to Laos, about the most laid back country on earth.

You have talked about pastic and that looks like what is in photo. I used a rubber pond liner from Home Depot to line an old leaking stock tank. Mine was a "Beckett" brand but Armstorng makes it as well, these are the EDMP ?? fish save stuff. Comes in two weights, and may be spliced with a goop sold by the mfg. Much heavier and trurdyier than normal ground cover plastic. I also used this stuff to line my wood walled grow beds.