Questions What do they need ?

I think these are looking great! As with responses to your previous post, I think those yellowing lower leaves are just being shaded by the leaves above them. This isn't necessarily a bad thing, you just have lots of vigorous new growth! I'd say keep up whatever you are doing and pull those yellow leaves off once they turn fully yellow.

 Hey @Misher21. Have you gave them a foliage feeding of Epsom salts. The rest look fine. Just looks like it could need a touch of Mag. Once the leaves start to go yellow they keep going. Some times it fast if they're in bad shape or it can be slow if it happen a little while ago and it's still just slowly going. But the main thing is if other leaves start showing the same signs. If not and it just stays to these leaves only then it's a pass incident. But if you haven't done the foliage spray it won't hurt at all. There a thread about it that Macky wrote. At the top of the page just search it. It's not bad as long as it stay's put. If it doesn't then the Epsom should help. Good luck. 😉 

  Hi @Misher21, sorry I don't want to give you misleading info. As I said before I'm not a soil grower but deficiencies and excess are the same in all mediums. Maybe this chart will help narrow things down for you. Plus there is also info about what it means when it the lower leaves or the upper leaves are showing problems, as far as what nutrients are mobile and immobile. It' in the diagnoses section I think. I wish I had a better answer for you, but I'm sure someone will come along and give you the straight scoop here soon. It not life threating so you have time. Good luck to you. I'll try to see what you come up with. 👍 

Hey Misher, I am a new cannabis grower, but a loooong-time gardener. I am not an expert, but I have to ask if you have been feeding nutrients at the rate posted on the package AND if your pots have dried out a bit recently? I ask because IF you are feeding at the labeled rate (which is too high) AND IF the pots have dried out recently, then the excess of nutrients in dried soil can "burn" the plant when it does not get enough water, and it often looks like this with yellowing edges on leaves and yellowing of leaves. Again, I am not an expert, and people with much more experience with cannabis than me might have better ideas.  Regardless, I hope this helps. Good luck!

Hey Misher, No matter what you do those bottom leaves wont come back to a green, they will most likely continue to fade out until the plant absorbs them and they drop off, This is completely normal and is nothing to worry about, looking closely at those leaves it looks like they are the older leaves from when she started her journey as they look like they only have 4 fingers, the top growth they are showing is healthy and lush and is looking perfect. I wouldn't be messing too much with anything just yet as it really does look like just an older leaf being consumed by the plant, whatever caused it may have happened a while ago as it appears they new growth is unaffected and it isnt spreading around the plant or it is simply just part of its natural cycle. It can be daunting and overwhelming with your first grow but you are doing really well, if you are really concerned about it remove that leaf and see if anymore crop up, but i highly doubt you will have any more do it other than the natural progression of the plant shading out the lower leaves. Cannabis is like any other plant and uses the leaves like big solar panels for photosynthesis and they also have pores that open up and consume c02 and in turn release oxygen(which is why leaf temp and humidity levels are important) so in a natural wild grown plant the process of lower leaves dying off is common and a healthy part of the plants process, if the plant senses those bottom leaves are not getting enough light to produce enough energy it will sacrifice that leaf and focus on the foliage further up the plant that is exposed to more available light. If you have a look at the plant as it continues through its cycle you will notice that the inner leaves that are shaded out will slowly wilt away and yellow off naturally as this process occurs. So in summary it is most likely nothing to worry about, by all means keep an eye on it but any drastic changes to feed etc may and often does make matters worse. i do strongly suggest you get a soil ph test to make sure your medium is at the correct ph range and able to effectively make nutrient available to the plant but other than that just breath and enjoy the plants cycle, good luck!