It could work

  • We are currently upgrading MFK. thanks! -neo
There is a thread on here somewhere about it. The debate was whether it was inert and fish safe or toxic.
 
They advertise it as totally inert & show acids & stuff being poured on it.... I'm sure plain old fiberglas resin would be just as effective & much cheaper though.
 
im pretty sure its not worth it
 
MonsterFishKeepers.com