I know this is a weird question but I can't seem to find any information on the subject?

I wouldn't think so

I'm building a fountain for the center of my fish pond out of ceramics that I need to hold in place or more importantly no strike each other. This stuff looks perfect as there is a need for occasional disassembly for cleaning.

I'm building a fountain for the center of my fish pond out of ceramics that I need to hold in place or more importantly no strike each other. This stuff looks perfect as there is a need for occasional disassembly for cleaning.

I found something similar and it had nylon in it and preserver; I think the nylon is what holds it together I Would imagine it is basically non-toxic otherwise there would be warnings about handling it. The stuff is waterproof - not penetrated by water - so I would think, at best, only a small limited amount of preservative residue from the exposed surfaces will go in the surrounding water which will dilute it to insignicance. If it were me I'd be happy to try it.

I could not find an answer but toxic is a relative term when it comes to fish, unless something is directly targeted at fish it's toxicity to fish is hard to figure. You might contact these manufacturers Pechiney Packaging or Milton Adler.

Thanks guys even in this day and age it's hard to trust that products are "safe". I will try and run down some more information or post in a pond forum.

Read this, might do the job.:

 

http://www.specialistaggregates.com/bentonite-clay-natural-granules-p-1677.html

Read this, might do the job.:

 

http://www.specialistaggregates.com/bentonite-clay-natural-granules-p-1677.html

 

It would be fun to build a large "natural" pond with the material described. My current pond is concrete but I have used polymer liners before with success. Anything that holds water can be turned into a fish pond. Ponds are a fun pass time and I would encourage anyone interested to give it a go.