Quote Originally Posted by ScorpiNO View Post
It will have beneficial bacteria, just not all the way through the rock like typical live rock. The closed cell design of the foam does not allow for it to house the bacteria all the way inside. Your other stuff probably does though, unless it uses closed cell foam.
The pond foam is also a sealant so I would assume that it uses closed cell foam.

Regardless, if I have tiny crevises in which water can pass through them in some way or another then the bacteria that grows in them will be benefitial and aide in filtration...?

So my structure does provide some type of filtration and it is not completely ornamental...?

Thanks,