I have a KW Filter and a KW Filter Plus. My question is with the ceramic filter in the first pipe, I remember seeing someone post about using a nut and bolt in place of the ceramic. Also, what kind of wood would be good to make a replacement filter? Something readily absorbent I assume. I have a ceramic filter in the pipe and it looks like new. I don't wanna ruin it and of course can't find any for sale on the web. Thanks all.