Thanks Barbrella - always great to find out something's actually OK and normal

I had been trying to decide whether to get a) two more females, b) one male one female, or c) stop - don't overstock! I think I'll be OK with 2 more barbs (plus the original 4, my dwarf gourami and 3 panda cories) in my 20g. A little too many fish-inches, however right now my nitrates never go above 5, and cories help with cleaning out any missed food. I think it would be great to have two males and watch them spar!
The tank background helps a lot with the illusion of it being heavily planted...my first round at keeping an aquarium (Oct '08) I had so many plastic plants in there, there was no free gravel anywhere. I thought that would reduce stress. What it did was make it impossible to clean. Now there's 7 silk plants and 3 pieces of
driftwood - that's it (see link in signature for better pictures). They all seem pretty happy though and there's lots of places to hide.
Well the Parasite Clear course is done and guess what! the one female no longer has sooty marks on her belly. I really don't know what's going on or how to explain this. She's still darker than the rest but now her belly's bright white just like the others'. One of the other girls was possibly rubbing on the plants this morning - I don't know if she actually was or just eating algae - I'm quite likely just being paranoid. I lost all my fish to gill fluke a few months' back and I'm still a little hyper-reactive to whether or not they're flicking or rubbing. I just changed out 30% of the water with a really good vacuum and put some carbon in the filter as per protocol for finishing up meds, and all's well at the moment (definitely no rubbing right now, and I really really hope none in the future!) Hopefully keeping their water super clean and qt-ing all new arrivals will keep them disease free
