Hmm, I don't have the things to check the levels........ I would get them except..my budgets are a bit short since I bought the 46 gallon tank.... so yea.......Co2 I usually used in small amounts by adjusting the valve.. and the plants fish didn't seem to mind a bit and the plants would grow a bit better, but as I said earlier, I had an algae outbreak even before, so I thought maybe the extra things were causing it so I tried not using them. I have 3 Amazon Swords, Some 5 Dwarf Sagittarria, 3 Hornwort not counting the smaller ones that are growing off them, Java Moss on drift wood with some Java Fern, a bunch of Micro Swords, Some plant with a long stem and long leaves, and another mystery plant.... They were cheap and I wanted to try them out XD. I have plant tabs under the 3 amazons. I orignally started with 2 amazons the 3rd one came from one of the other amazon. My fish stock is 2 1.5 inch Blue Rams, and 2 1.5 - 2 inch Cories not sure how to spell their names. I think its somewhere around Melantius lol. Oh and I have some ghost shrimp around 1 inch despite the fact I was told not to get them because they would have some problems with the blue rams, but only a few pecking occured at first, but they didn't cause any trouble so I kept them in. Does this help a bit?