Trail, British Columbia
Yes it does. Seltzer contains water with dissolved CO2. When it is sprayed on the plants it is absorbed by the leaves for a little while and if there is not a lot of ventilation the parts per million of CO2 is increased in the immediate area surrounding the leaf. To be effective, this should be repeated several times a day.
This method of raising CO2 levels can get expensive with large plants and also increase humidity to undesirable levels. It is most efficiently used with seedlings and young post-cloning vegetative starts.
Readers with grow questions (or answers) should send them to Ed at:
Ask Ed, PMB 147, 530 Divisadero St., San Francisco, California 94117, USA
You can also email Ed at AskEd@quicktrading.com, and send queries via his website at www.quicktrading.com.
All featured questions will be rewarded with a copy of Marijuana Question? Ask Ed. Sorry, Ed cannot send personal replies to your questions.