Doolymoo

hi. long time i used some secrect jardin Led lights. these are 26 watt led. i used 2 of them until babies were small so until around week 3 ( day 21) girls developed very well, because they dont like massive light. you can use tiny led or cfl lights absolutely enough for germiantion and firs weeks I normally start my girls on 24 hours for the first 2 weeks, after i go to a more moderate lightschedule . anything between 18 and 22 hours is fine

If you are really in week 3 , if you are growing in coco ( your infos says hydro ) and if you are using the canna nutrient lines then why aren't you feeding ATM ? I mean in coco after the 1st week you can start to bring nutreint at a ec level around 1/1.2 , at week 3 you should be around 1.2/1.4 Ec. So generally the roots stimulator can be used during week 1 to week 4 but to me it's generally useless after week 2 as you'r starting to use the "real" nutrients ( I mean the basics and importants ones )

Hi @Doolymoo buy on aliexpress bro a pen. 20 $ you get a PH / EC reader. Good luck mate 👍

How old is really up to you. Starting from a rooted clone cuts off about 2 -3 weeks of veg time as in you can veg a clone for 4 weeks and flip with a decent size where as it might take 6-7 weeks from seed to achieve the same size. It also usually takes 7 to 14 days to root a clone soooo 🤷‍♂️. If I have a good solid rooted clone around 5 to 7" tall, I would consider it about 3 weeks old. On a side note, if you have a flat white painted wall in your grow space, I would get rid of that mirror. Flat white actually has a higher reflectivity vs a mirror. May sound strange but very true. Download a lux meter app and check out for your self. Happy growing!!

Probably atleast 4 more weeks before considering a flush. That would put them at 7 weeks... for a likely week 9 harvest.

Hey Growmie, This is how it should look this is definately Chocolate Mint OG. The purple comes from the Grandaddy Purple they crossed with the Emerald OG. So it can get VERY Zpurple! Lol. Hopefully, this was helpful and remember ..."Happy Growing" and "Free your mind one puff at a time".