Best divider material ?

[Amour]

Thanks! I like it too. I have a brown one in that tank and a pink one in my other tank. I bought them at Petco for $5 each.

[Drift]

I actually have two dividers in mine. One is plexiglass that fits in just fine and doesn't need anything to hold it up. :) Then the one Amour described, but I used blue colored. My Plexiglass was obviously clear and I didn't want them too stressed by clearly seeing each other so the mesh blocks most of their view and the plexi didn't reach into the top on my hood, but the mesh does.
It's a little overkill and I probably could take the plexiglass out honestly, but its more sturdy.

[kikuhoshi]

I have one of the dividers from PetSmart... Aaaand it's alright, as long as you don't use the metal clips. I did, and it let my girl in on the boy's side twice before I figured out that that was the problem. Also, putting little rocks on the bottom helps (I have glass "rocks" from the dollar store, but similar to these from PetSmart). Honestly, though? I will probably never buy any more.