Zandor - First on the lights I will be using HPS (600-1000 watts depending on what comes across e-bay in the next couple of weeks). That should do the trick. Just trying to get my CO2 down now so it will be ready to go in a couple of weeks when it is really needed. The atmospheric meter arrived in my town today at 7am, yet still not delivered. Maybe Monday?

Here is a clip from a science journal:

In the process of catalysis, the contaminant gas enters the pores of the catalyst and it is there that it reacts with the active phase. Water, carbon dioxide and a halogenated compound are produced as a result of this reaction. This last product is subsequently neutralised in a shower of caustic soda. Thus, only H20 and CO2 are liberated into the atmosphere.

- Note that this process is why you can put the heaters in your tent. Almost all VOC's are eliminated with the only tradeoff being higher CO2 levels but not anywhere close to toxic for humans. Even if the initial "burn" did not create the CO2, the catalist would reform VOC's into H20 and CO2.