charcoal

[jason_sps]

I've been reading different things online about the layers of substrate in a vive. Personally, I'm going to lay down some lava rock then some hydro balls. I read that a layer of charcoal is needed to keep odor down then some moss but I don't know what charcoal to use. I know the inside of a lot of water filters have the charcoal needed but I don't want to buy a bunch of these just to tear them apart. So where can I get this charcoal needed?

[Grimm]

Any large greenhouse or garden center should have it....Its just in bags labeled "Orchid Charcoal"...Typically it comes in 3 particle sizes. Small is best, but medium should be fine if you cant find it. You can just pick out the larger chuncks.

[jason_sps]

Thank you Grimm. You've been a load of help with this build.