Yes, I'd like to know the answers to CAPSLOCK's questions as well.
Once your tank is cycled, and assuming your gouramies are of the type that CAPSLOCK mentioned---also assuming that you've got cory catfish of some sort (or at least nothing that will turn out to be huge!), I do have a suggestion for new tank-mates:
Bleeding-heart tetras...
I was very relunctant to get these since I find they almost always look so dull-colored at the LFS. When I took some home one day, I was thrilled beyond belief! Sure, they're a little dull when first introduced to the tank, but after a few days...and a good diet supplemented with bloodworms (they love this stuff!), they turn into magnificent little creatures.
These are mid-sized tetras (2-3 inches adult-size) that are relatively peaceful, but do have some spunk to them! Each with their own individual personalities that really shine out. I've been captivated for hours just watching these little guys and their antics.
Did I mention that they are absolutely gorgeous? All hues of red imaginable, and some nice blue coloration as well...beautiful dorsal and anal fin coloration...Especially in a tank with darker background and/or substrate.
Any specimens you see at an LFS will give you, at best, a poor indication of what they'll look like under any form of decent fluorescent lighting.
Anyway...if you're interested, plan on getting 5-6 minimum.
Did I mention that I enjoyed keeping bleeding-heart tetras? Lol.
Good luck with your new setup.
Big Vine