Quote Originally Posted by Mr Cob View Post
Yep I get what captexas is saying. Also understand what you are saying.

No substitute for real tonga....florida...fiji...etc...live rock.

How ever, anything that is porous has the potential to become live filtration but of course no substitute for the real deal.

Maybe I was just trying to prove a point that cap was incorrect to say that foam is only ornamental and can not provide any benefit in filtration.

All good.
Why not spray foam over those semi-hard foam blocks that are super pourous.... leaving a few areas for the bacteria to enter, once there they will spread and be a super-bacterial abode. Makes sense or no? Similar to below:

http://www.amazon.com/ProClear-Aquat.../dp/B0006JLUTK