"Joan" wrote in message
...
I have a 300 gallon stock tank that I'm keeping as a
quarentine/hospital tank in case my pond fish need it. I'd like to
put some plant shelves in. Is cedar or other regular wood okay, or
might these contain substances that would be toxic to the fish?

Thanks.

I use plastic letter crates that you can buy at
office supply stores or Wal-Mart or Target
etc. I haven't noticed any problems for my
goldfish, minnows or plants.

You can also turn plastic nursery pots
upside down, but I don't find those as
stable (smaller "footprint" than the crates)
and have had some plants fall over.

Gail