At least one gardener mentioned nice gains using 13.5 / 10.5 while incorporating the 730 exposure. It motivated me to give it a test. Im initiating flower w 12/12 but gonna switch to 13.5 / 10.5 after 3weeks or as soon as i determine that flowering is in full swing. Im not sweating the extra energy if it delivers weight. I will most def report my experience. Today is day 4 of 12/12.