fabled

Autos arent the best of plants for newbies as they're so senstive.You'd be better off with photoperiod which are much easier to grow as they're more stable and stronger.Iv havent grown without a root booster for over 15yrs now and the best out there is house and gardens roots excellerator.Its alittle warm.24 is ideal and you're at 27 but i doubt it will make any difference but you could google it and check.The next big issue with slow growth is constantly wet soil.It needs to dry a fair bit between watering.This is 1 of the issues with autos.You need to put them in the finale pot if you dont have a lot of experience with transplanting but its too much and takes too long to dry.Dry cycles engourage rooits to explore and branch out.Feelling the weight of the pot is a good way to determin when its dry but don't let it dry too much.The top half inch wants to be totally dry but it wants to still be moist and dark below that.Its so much easier in small pots.I'd have that on 70% dose of your base grow food by now.I have mine on fullk feed by day20.They want a 30% dose as soon as yoiu see the first true leaves which was probably 10 days ago.Wait,is it prefertalized soil,if so theres plenty of food in there but you'll still benefit from a root booster as its not the nutrition you want its the stimulants.You've got your base food,grow and bloom that has the npk ratios on the bottle,the 3 number then you have the booster like pk which has extra nutrients in it then you have the stimulants that are mostly plant extracts woith growth hormones in.A lot of the booster also have stimulants in it.It can get quite complicated when you first start.Oragnics are best with soil.If it doesnt state its organic then its man made mineral salts which work best with hydroponics.I forgot,stand your water for at least 24hrs to disolve the chlorine as it kills the soil microbes and its them that turn the organic food into plant available elements.I'm more than happy to help just be carefull who you listen to and tripple check every but of info you're given,mine incuded,its good practice.

Iv just seen maties comment about you watering everyother day which is too much at this stage with soil.Is that the canna bio mix with the 30%coco.Iv been using that side by side with my cococ grows to see which is best.At this stage I may water once a week depending on the atmosphere but I bet you'll not need it more than twice a week so it will be something like twice as much as you need nwhich will certainly be the cause of the slow growth.Get a root booster.Check out whcih way you want to go witht the type of nutriants you want to use,organic or mineral salts.If it doesnt state organic then it will be mineral salt based.

I don't know why I can't reply to you in opened question but here is more info about watering. first days I were watering it around 20ml one or twice a day. I looked on a soil humidity, when it was dry on 3-4cm I watered it, but some days ago I started to water another way, tried to experiment, I waited for dry soil and watered it with 100-120ml around and near root.

I use tomatoes soil 70% and coconut 30% in 25l pot.

PPFD is around 250-300. CCT 5500. DLI 18-20 (18/6 lightcycle).