Just in case the thing about the Cories confuses you: 2 are Peppereds and 1 is Bronze
About the oxygen? Sorry, I forgot to mention that I have 4 plant bulbs in my tank, and 2 have leaves right now, and our filter chucks air bubbles into the tank. Does that help the oxygen?
For the White Cloud and Neon, we accidentally got the Cloud when we were getting Glo-Lites I think, and the Neon has been through a lot, like when we wre boneheaded enough to put 2 female barbs in, I think we had 2 female Tigers, yellow whiteish, and a spot near the back fin. The dude at our local Wal-Mart said they were probably females because of their markings, and that Wal-Mart takes fairly good care of the fish (meaning it's not perfect, last time I went there was 1 fantail goldfish with a swim bladder problem, and the same for a Het, but the fantail was in a tank with a bright sign on it that told the employee not to sell them, they have ich. Other then that things are good, when theres dead fish its not in mass numbers), and they have people who actually know something about fish.
![Cool :cool: :cool:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
Anyway, these female barbs weren't happy in this piddly little 10 gallon, and they went hostile. I saw them nipping at the little ghost shrimp. Later a peice of its tail was hanging out of one of them's mouth. Then there went the first Neon, nipped to death, then they brutally injured my adorable little Peppered cory to the point where he was stuck to the filter, gasping for life. I hadn't read the acceptable/non acceptable fish disposal, in this case excution and mercy for the barbs and the cory, so down to the sewer they went.
The next saga was that another shrimp we bought got ticked off at 2 unlucky Neons, and he had Neon eye for lunch.
We now have only one surviving Neon, which I have named "Soldier", with fin damage from the barbs. Don't worry, he's pretty happy with the others now. I forgot to mention that we had 2 shrimp after the barb scare, the smaller one, Casper has gone AWOL while Gus, the bigger one, is happy. I have a suspicion of who ate Casper.
I hope this info helps!