Critical + 2.0 in Outdoor 2019

Hey @Betagemini, your plants looks good first of 👍. This is a common nitrogen deficiency when especially it's lower leaves that turn yellow. If new leaves aren't getting enough nitrogen than they are stealing from older leaves hence the yellowing. It's more common to see this especially as your plant matures it requires higher amount of Nitrogen as it is drawing more nutrients and minerals from the soil. Your plant is huge therefore I can see this happening. As you transition into flowering the plant will still need some nitrogen but far less than in its vegetative stage. If you start seeing brown spots on your leaves then in that case it's also missing some calcium which next year you can add dolomite lime to your soil ahead of transplanting or in the mid-term mix some cal-mag with your water. Looking forward to see this beast in flower.

ven elder mommas got green fingers believe me... for me it worked wonderful to give them alist what to do... for example, give her evry day 3l water....... and an saturdays 2 liter water.... and after watering 1 liter mixed with..... 4ml ....thats it..... my granny loved to nurse my plants^^... i hope your grannys are as clever as mine was... and give alittle trust into the ladies.............................. before you leave i would flush them and give them some N .............................more in the comments....

Yellow dots across the whole plant doesn't really scream nitrogen deficiency to me. Usually, a lack of nitrogen starts at the bottom of the plant and works its way to the top. I doubt its root burn. If its only happening on the side where sun is abundant then it could be that the plant is actively using a nutrient in those leaves that it isn't getting enough of in its feedings. looking over the charts I use I don't see any deficiency that looks specifically like what your plant is experiencing. When I see that it usually screams ph issues to me. I would water the plant to get a good amount of runoff next watering. Then ph test the runoff and make sure it is within the proper ph range. I see you have 6 listed as the ph for the current week. That is a bit low of ph to be watering soil with. You usually want it a little higher in the range of 6.3-6.8 and you want to drift in that range to ensure all nutrients have a chance to be absorbed. If it is not a ph issue, try feeding something with a little nitrogen in a low dose. Also looks like possible calcium issues as well, so maybe add a low dose of a calcium supplement. The only other thing I can really think of is the fact that you are using what seems to be an organic nutrient. Organic nutrients do work by themselves, but they work a whole heck of a lot better if you have a good microbiome in your soil. Something like real growers recharge would help you to boost the microbes in your soil which will really help to break down the organic material and feed the plant.