Thanks for the reply! It appears a year has passed and I wanted to know how the tank was doing-and-days! I guess I misguided you with my original question - what I meant was, what was contained inside the plastic mesh that you put around and underneath the bottom of the cork pieces? It looks as if there is a sort of blueish container (I think it was the ceramic media you mentioned, if so, where can you purchase it?). Is the reason why you glued the cork pieces higher above the bottom of the tank so you can access it more easily for cleaning?
I also wanted to know if you poked holes in the loc spray bars to distribute the water?
Thanks again for your inspiration!!