Another question: Charcoal?

[steviejcsc]

Before I begin to clean and build my enclosure I was wondering the importance of the layer of charcoal. I am doing a layer of Hydroton, and screen then my substrate layer. I read on many of the forums and enclosure guides that many people have this as optional. Is it necessary? I know it acts as a filter, but do I need to include this layer?

 

[AlexPalmer]

I'm not positive, but it makes it sound like it would be easier to clean the substrate. I would still clean the substrate up anyway though.

 

[sandrachameleon]

Ive used with and without, in FROG enclosures, and I like with but no you dont necessarily need it.
What type of pig are you housing?

 

[steviejcsc]

Thanks, I decided to build it without!