I got all my ideas from from various aquascaping websites, this tank doesn't even compare. The intensity of my light is only 18w but the total power of all four tubes is 72w. I put CO2 straight onto my filter outlet through an airline in my DIY reactor. You can add stuff like Flourish Excel, a liquid CO2 like supplement. The stones you see are probably diffusers, the only help disperse CO2, not create it.
Zev- I removed the breeder net into an icecream container full of tank water after spending 5 mins trying to suck them out with a pipette, they're fine, getting less afraid of me by the day. I might like some more...