Flourish Comprehensive is a deceiving name. It is actually quite low on macro nutrients. Since you are going to have a co2 system, you will need more macros to balance the tank out.
If you look at the instructions on the Flourish bottle you will see that it actually mentions that you can go out and buy separate bottles of each macro nutrient. I think that is a waste of money. I dose dry salts from aquariumfertilizer.com into my tank using the Estimative Index method (Google for more info).
Also, will you be keeping cichlids? Those guys are known to tear apart and uproot plants :-(
Last edited by 2Shi; 02-02-2013 at 12:43 PM.