Most favorable grow room temperature is 70-80 degrees. However, plant seems to be able to absorb more light at higher temperatures perhaps up to 90 degrees. High light and CO2 levels could make this go as high as 95 degrees for increased growth speed. Once flowering starts, it is good to reduce temperature to preserve potency. This may also reduce the speed of growth. Though higher temperatures will make plants grow much faster by exciting the plants metabolism. Checkout the site caligrowkits!