Quote Originally Posted by btownbuddah
Thanks oldmac,
Those meters are much cheaper than the one I was looking at. The advantage to the other one is that it hooks up to my regulator and maintains the desired level. Sounds like I could probably slow down my leak for now. Still, it would probably be more cost effective to lose the AC instead. Assuming, of course, that the yield would not be effected. I just want to do what's optimal. I understand that they can take more heat with CO2. My question is; which is better? Does more heat speed up photosynthesis and the grow rate? Or do the plants still thrive and yeild the best at 75-80? What temp/CO2 ppm/nute ppm do you use for late flowering?
There was a scientific study done on exactly this. It is very informative on light , co2, and temps.
Here is a thread about it...
http://www.springerlink.com/content/...3/fulltext.pdf
It is a scientific document, so basically, what it says is optimum temps are 77-86f for water uptake, even at different co2 levels. This is a study done on cannabis sativa, do not know if indica would be different.:dance:
McDanger Reviewed by McDanger on . Need some advice for using CO2 I was just browsing through this site's FAQs and I noticed that it says you should keep the temp at 80-90. I'm on my second run with CO2 and I've been going broke trying to keep the temp at 75. The person who sold me my regulator said that the plants can take a higher temp with CO2 but still thrive at 75-78 and yeild better. Now I'm reading the opposite here. I'd love to turn off my ac but it makes me nervous. I'm 4 weeks into flower and everything looks happy. I would very much Rating: 5