Backyard Aquaponics
A place to discuss aquaponics

I forgot that west system might be hard to find... When people usually ask me, my response is "aisle 19 first three four foot sections to the right. Oh, and have you tried their 610? People start rioting when we run out, it is that awesome."

There is a fiberglass store a few hours away from here that sell the regular west systems epoxy, but I know from experience that that doesn't stick to the pond liner

Thin HDPE <1.0mm is almost impossible to repair sucesfully long term. Heavy duty stuff not much better
EPDM rubber liner is great for this reason alone

Firestone do make a repair material which sticks quite well to HDPE
Clean the HDPE but DONT rough it up, system works better on smooth surface
Mostly sold in commercial packages

Pondgard repair kits are available which might do the job - $30 or 40 ea Id guess

Colum - just for clarification..

I was assuming a hole was a round(ish) hole... Are you talking about nicks in the edge of a large hole ie. for the UniSeal..?
..
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They are more nicks around the uniseal. I've got it all set to fix tomorrow, so with any luck, it should be fine.

I'll try the new uniseal & selley's epoxy aqua repair stuff. It's cheap enough, I know where to find it, and says it'll stick to the HDPE. And I'll overuse the silkaflex in between the glued sections, as a second line of defense. Maybe a tub of the knead it aqua as well.

Good luck Colum.

The hole seems to be fixed. No more water running anyway.

I had a good look at the epoxy stuff, and it said it doesn't stick to the plastic I was using. So I got another tub of the silkaflex, and sandwiched it between some pond liner and used a lot of it. I tried a bit of duct tape, and used it to seal the edges of the liner that's over the top.

Then the weight of all the stones to hold everything in place.

It seems to have worked, no water dripping now!

Thanks for your help everybody.

Good to hear on the repair victory! Hopefully it holds up long term also.

didn't you take step by step pictures?

Normally yes, it does sound like something I'd do, but it was putting black silkaflex on black liner, and then more black liner on top, and d squishing it all down. Then sealing the edges with expensive duct tape (not sure how effective that was though).

Not the most interesting photos.

Good job colum fingers crossed for you..

How is the repair holding up almost a week later?

Well, the bed seems to have sunk into the ground, and all the water is pooling on one end of the bed, but there are no leaks, or drips. So I'm happy with that!

I've got it dangling in the air atm, waiting for concrete below the leg to set.

Take the small victories when you can get them