Hey Light, really looking nice in here. First off to comment on your deficiency. I definitely think that this is Magnesium related due to the spread of of yellow veins ALL throughout the area of the affected leaves. I believe that I have seen Mg deficiencies so much, that they are one of the most common nutes to get locked out when introducing soiless medium, for its short life in other mediums. In fact if your plant's stems starts turning purple
STRICTLY towards the upper half of the plant at any stage of growth, this is more likely related to a def than actual genetics of the plant. With the 'purple' phenotype I have always seen the purple hue develop, either from seedling all throughout the grow, or during late flowering when genetics start to show due to environmental changes etc. But when you have it start to develop on some stems and not others, But mainly on new growth, than this is an obvious sign, IMO of a def.
Now a couple of questions for you. Are you noticing the yellowing of veins more towards upper new growth or bottom older growth? Can you get a picture of new growth with as little bud as possible? This where you can usually tell if a plant is suffering from a Mg def. Lastly, just lightly feel your affected leaves between your fingers. If you notice a dryness or brittleness in some of the affected leaves than this most commonly shows the lack of Mg and the start of a def.
AS others have said, I will not worry too much at this stage, but you and I are similar in the fact that we notice the very little changes in our plants as soon as they strike. Now the decision to react on that is where the future of your plant lives. I tend to keep note on all these changes as you do, and incrementally start adjusting for them at each feed. Eliminating one factor at a time to get the solution!
But as King John and Craw mentioned (and maybe Alex
) I would not stress TOO much over it at this stage of development since it has not spread too much by the looks of those pictures! You are doing great thus far Light, and a lady a size of that magnitude will definitely warn you ahead of time from the start of a def or lockout. There is so much square area covers that you have so many points of references to compare!
Got a question, why do ppl start in small pots and move to larger later? Ease of watering control?
Hey Nerf, great question. I have done many experiments on the affects of pot size vs. growth rate. And I have come to the conclusion that the SMALLER the pot, the smaller the growth. I would say the biggest factor here is to find that balance between plant size and root development. I can somewhat agree with putting a seedling in its final pot due to avoiding extra work, BUT from what I researched, the actual progression of larger medium tends to give a MUCH bigger root mass at the crown of the plant. The roots of plants tend to grow straight down and THEN start encircling the pot width-wise in attempt to find more space. If you are able to get a plant to this stage with each incremental increase of pot size, then you will develop a nice healthy root mass that will grace you with faster growth rates, and overall bigger, healthier plants.
Here are two picture comparing growth rate of the exact same strain (from seed), but the only difference is I transplanted the bigger one 6 DAYS before I eventually transplanted the smaller one.
You can clearly see how pot size has affected growth rate at this stage, BUT obviously as the plant gets bigger, you will never be able to compare what is 'faster' new growth or not!
I have so many photos and logs of experiments I have done and am currently still in the process of. From examples of wide ranges of what specific deficiency look like to comparing growth rates and pot sizes. I will definitely be putting up some kind of hub to document my findings an such for the community.
Wonder how many tops are on that plant, amazing!
Start counting friend, I am right behind you
