[PRJCT92EH2]

Make sure the rams are one female and one male. What brand is the "live freshwater" substrate? You probably won't need that AND the gravel.

 

[PRJCT92EH2]

I would go with the rams OR the Killifish, not both. One of them would be the centerpiece of your fish, the cardinals would be dither fish and the cory's your catfish. As gravy9 mentioned, once your tank is decently established and has a little algae Otocinclus would be good to add, maybe a rubber lip or bushynose pleco too. Soaking the driftwood in R/O is fine, but i wouldn't use R/O water for your tank unless your tap water has some weird parameters. In planted tanks the trace minerals in tap are actually good for the plants. Good luck!

 

[PRJCT92EH2]

THe only way to control the amount on CO2 in a DIY system is to vary the amount of yeast you used. More yeast = more CO2 = more frequent changing solutions.

 

[PRJCT92EH2]

I am running 48 watts on the 14BC. It is about 3.4 WPG.

Would I be able to use a Paintball CO2 bottle or is there a specific one I need to use? Also, would I need to get a monitor of some kind for it?

On the Excel, how does it work? How much would I have to do to keep my CO2 levels at the proper level?

One of the sponsors sells an adapter to use paintball CO2. Can't remember which one off the top of my head though. Most people use 5 or 10 lb. aluminum cylinders since they last longer. You can find them locally at any welding supply (Airgas, etc.)