liverock made of foam??

[Mr Cob]

Kind of, I guess, the main difference is that real live rock is super porous, it can process much more bacteria becaous of its porousity, foam only has a cerain amount of porousity on the surface because the 'bubbles are connected., as opposed to live rock which is porous all the way through if that makes sense.

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.