The rumble rock is a cheaper form of live rock that my fish store sells for $4 a pound. It is cured peices of dead rock but they come in little broken off peices of big rock so they are cheaper. I am going to get a few peices of it and put in in the part of my filter where the Bio wheel and filter pad go so i will have a biological filter. I think this will work as a good filter.
If anyone doesn't think this will work please tell me.
thankks,
Dan |