how do you regulate the CO2?

[Jdog7000]

I'm going to do an experiment this grow with dry ice.
I've been told that placing pieces of dry ice on your soil in the last 3 weeks will bring the purple out of the purple strains. And feed them for the last few weeks as well.
I'll let you guys now if it works.
It will be in mid summer so if it works it definately works.
Only the Purple Strains will have the ice placed directly on the soil.
And the Blue Strains too.:thumbsup:

Mobay ,will those tablets work with just water in a container?
Or do you need that whole set up?

Jdog7000 Reviewed by Jdog7000 on 06-09-2006. how do you regulate the CO2? Would i be able to spray seltzer water on the plants (carbonated water...with CO2) to deliver CO2? does anybody do this? i can't think of any other way to deliver a good amount of CO2. Rating: 5