help me please fom rock

[har75]

hello I am new to the forum and would like to help me eh seen this issue and I am pleased kiero much and do something well but I have a doubt that the foam is used which I got in mexico is composed with diphenylmethane and saw that there were also with polyurethane are toxic? not damage the water? me an said that his last is derived from petroleum that is why my certainly not an experienced problems with the foam.

[har75]

hello again sorry there is nobody who can guide me on the foam rock?

[har75]

hello they excuse again is nobody can help me and so it asks?

[cpeisher]

You could make a test piece, put it in a 10 gallon and monitor the parameters. If the tests show it's fine, i might by a cheap blue damsel or something and stick it in the tank and monitor the fish for a while...

No fish were harmed in the writing of this post...

:-)