I agree. Just switch it to 12/12 whenever you're ready and I always change my reservoir and add flowering nutrient the night before. If you wanna speed the process up look into Advanced Nutrients Bud Blood. It's cut the transition period down to three or four days in many of the plants I've grown and you only use it that one time at the beginning of the flowering period. Good luck with whatever you decideThat's pretty much the way we all used to do it - "Slow & Easy"! Then we found out, it doesn't really make any difference!