Está mal si mis plantas están con 24h de luz en ...

YES, don't do it. All cannabis plants, autoflowers included, NEED sleep to finish their photosynthesis cycle and to have a correctly functioning metabolism. A plant with an incorrectly functioning metabolism will NEVER grow to the best of its ability. A lot of plant processes occur during the dark period, without a dark period, these processes obviously can't occur......leading to an incorrectly functioning metabolism and a plant that isn't growing healthily/to its best ability. The MYTH that it is ok to grow cannabis for weeks/months without sleep needs to be removed from history asap! 18/6 is optimal for veg or the entire cycle for autoflowers. Also, cannabis can only grow so much during any one 24 hour period and this growth tops out around the 18 hour mark, meaning running your lights any longer than 18 hours is basically a waste of electricity......so there is little to be gained by being greedy and trying to push your plants past what they are capable of by giving them 19/5, 20/4, 21/3 etc.