Lime green, slow growth seedling

A plant this size needs very, very little, if any, feeding and it looks just fine to me, but without a dark period every 24 hours, she will not be able to complete her photosynthesis cycle and grow properly. All living things need a cycle of activity/sleep/activity/sleep to be able to function properly, cannabis being no exception. Plants undertake certain metabolic processes at night which they can not do during the lights on period and without a dark cycle, will suffer from incomplete metabolism, causing all sorts of issues down the track. 18/6 is optimum for autos and photoperiod plants in vegetative growth and this time frame has been derived at from over 80 years of research and is not a random number. The stupid myth that autos can be grown for months without rest/sleep should be expunged from history ASAP as it is a completely deranged way of growing cannabis. Give your plants the proper circadian rhythm they NEED, with an 18/6 cycle, and I am sure once their metabolism recovers, they should boom away. Flushing was an unnecessary step that has potentially damaged the soil microbes, so I would be adding some sort of mychorrihzae, "Mykos" from Xtreme Gardening is excellent, and this will really get your plants healthy and moving along. After 35+ years of growing and after discovering this product a few years ago, I now consider it a "magic wonder ingredient" and would/will never grow without it again, the benefits are real and remarkable. And no, I do not receive any rewards or kick backs for recommendig this product, there are a few similar products that offer the same benefits, such as Great White Shark, but after trying Mykos, well, as they say, when you are on a good thing, stick to it! These products can be a bit pricey, but in my opinion, worth every single cent! All you have to do is add it to the soil and off they go. However, do not fall into the trap of thinking that giving more than recommended is better or mixing multiple products together will provide even more benefit, these things work best as directed and on their own, multiple types may even cancel each other out, leading to no benefit at all. Just pick one product and stick with it, you only need to apply it once and a package will last many plants/multiple grows, making it quite economical in the long run, and as I said earlier, the benefits are real and remarkable. They work by almost "pre-digesting" nutrients so that they become more readily available to the plants, meaning feeding is more effective and not required as often or as strong a dosage, almost reducing nutrient feeding by about a third, but don't worry, growth is still superior, it is all about efficiency, and not about feeding your plants to bursting point with exaggerated nutrients and/or boosters. Trust me, once you experience the benefits, you too will consider them a vital ingredient in every grow you do! Turn your light back up to full strength, your seedlings will need it for best growth, just play around with the height if they look a bit stressed. I run my LED light at full strength from day one until harvest and with both the grow and bloom components switched on too, from day one until harvest, and believe this produces superior plants and superior flowers too. There is no such thing as too many light spectrums! Hope this helps, Organoman.