Innovative Marine Custom Caddy Question?

[MJ535C]

I have an innovative marine 20 gal. tank that has the two overflow returns. I use their Carbon and GFO media packs in one of the Caddies. Should i be putting media packs in the other Caddy as well. I use Floss on top of both Caddies.

 

[exnisstech]

Up to you. I don't run anything in my IM20 except some floss when I'm blowing the rocks off or scraping glass. GFO should only be used if you are trying to reduce phosphate.