Hi, Joel!! Thank you!!
This LFS that I've mentioned actually has many options for cory cats, but I'm limited by my tank size. Oh well! I think this is probably the best LFS in LA, but nearby there are some really interesting ones, just have to take an afternoon off to go there.
Yeah, I don't think I'll put anything else in the tank, other than maybe an assassin snail, if the bladder snails start to breed too much. I actually like the idea of having only the little fishes in there, and I did some research to find out what size Panda cories get, and they're one of the smallest. I'll probably get only two more next weekend. This is the info I've found about pandas:
http://www.planetcatfish.com/catelog/species.php?species_id=267
I'm sorry for your cory that died!
I find it very interesting that you have a male betta with danios in your 10 gallon! The betta doesn't fight the other guys? Awesome! I thought they'd always have to be kept alone in the tank, but after reading about your tank, and looking at this link, I guess not
http://www.theaquariumwiki.com/Stocking_a_10_Gallon_Tank#Fish_suitable_for_a_10_Gallon_tank
My nitrates, as of last Saturday, before the water change, were around 10 ppm, not too bad, but I did my weekly water change as always. I sometimes do 2 water changes per week, too, depending on the nitrates levels. I don't know exactly what the balance would be, having enough nitrates for the plants, and not enough to do harm to the fishes, but I read that we should always keep it under 40ppm (mine never hit this high, the maximum was 20ppm)