They are very far apart, at the ends of two different rooms.
It seems to me that sometimes traditional plant tanks are a vicious cycle. Add light, add C02, then plants use up the nutrients too fast, and you have to add more nutrients.
I like high light, red plants, but I do not care if they grow tremendously fast. I know I don't want to get into the vicious cycle of trying to play "catch up."
I also have a 2 gallon hex with a 10 watt compact fluorescent screw in bulb over it with many many plants packed in there. It is doing tremendously well, with deep reds and no algae. That has been going for several months now. I did use Excel in that tank, and now I'm going to switch over to ammonia like the 29 gallon and see what happens. I've found Excel to produce a bad smell in the air after awhile --perhaps from the decomposition that produces the Co2. The first day after I stopped Excel and added Ammonia, the smell was ten times worse! (with lack of fish, I had been dosing large amounts of Excel in there).