Backyard Aquaponics
A place to discuss aquaponics

Do you think I could use a liquid rubber pond liner to make a tank in a wood box?

Here is a place that sells something like that. They say its fish safe.
Pond Liner
Or this one is a roof product that is fish safe


Has anyone tried this?Liquid Roof Rubber

Give it a go DDM!
Tke one for the team.
Anyways we can't get it here in Aussie - Yet..

Hey DanD man.... check out these guys....

Non Toxic Epoxy and Polyurea Pond Liners and Sealers

Applied with this POND SHIELD-FSP APPLICATOR GUN

The one that says 'fish safe', I would be willing to try... but most of the roof rubbers or others have fungicide or 'bio'-cides. So, I would be very careful with them.

A lot of concrete tanked aquaculture systems switched to either an EPDM rubber liner or a painted on version a few years ago. I know there was a trout farm in Colorado that did it after they found the concrete was leaching 'something' into the water. They wouldn't say exactly what. And another trout farm did it after they had an infestation of, I believe zebra snails, in order to create a smother surface to eliminate the breeding grounds and to better seal their system from the water supply down stream.

This topic has been discussed before .....

http://backyardaquaponics.com/forum/vie ... php?t=1474

and here's another link to a spray on Polyurea product....

http://www.makc.com/SprayLiner_Moore.pdf

That poly-urea looks like interesting stuff!

Looking at the liquid rubber, for a straight forward shape, wouldn't it be cheaper to go with a rubber liner?

I need grow boxes(I said tanks, but meant GB). Everything is expensive and not the correct size. I found a company that makes a polymer that makes sand into concrete hard water proof material, but its not a lot cheaper than concrete (soiltac). Thanks for the info. Im just looking for the cheapest way out and 55 gallon drums are really not that great because the sides are shallow. The only other thing I could think of was fiber glass, but I dont know how to make fiberglass boxes.. <shrug> I'll keep looking. Ahh where to get good boxes for fish poop and plants..

Hey DDM, several members are using bath tubs (Worms, Tragic, AquaMad). If you can source some free or cheap used ones they work well.

That's just it, the cost per square foot on the liquid rubber looks to be higher than the fish safe pond liner. So, if you can afford the wood structure, it would be cheaper to line it with a liner, than to paint it with the rubber. IF what you want is a conventional shape. If you want it to be an odd shape, then the liquid would definitely conform better. There are several places using lined wood boxes for both grow beds and fish tanks. Just a thought. I'm personally going with half barrels because of their availability at a decent price. Lumber is getting expensive.