Can someone tell me what they think these spots are on my autoflower please?

[RyanjMaine]

Can anyone help me diagnose what's wrong with my autoflower?

 

[CustomGrowing]

Is it the lighting or are 90% of your leaves yellowing not just spots.

Give me some info man
Soil
age
nutrients
light
light distance
how often are you watering?

 

[RyanjMaine]

Is it the lighting or are 90% of your leaves yellowing not just spots.

Give me some info man
Soil
age
nutrients
light
light distance
how often are you watering?

Sorry budy got busy,week in a half old,coco,sensi coco a and b light every other feeding and cal mag on days I dont about every 2 days.this is the only one doidoing it out of ten and one slight nute burn.so I am stumped,its a brownish kinda rusty look,there was the big blotch and then this little dot showed up.I had some temp problems ,and pH with the coco most likely,just seeing if anyone has had it and knows what it is.I appreciate it man!

 

[CustomGrowing]

Did you start all the plants at the same time, and there all getting the same feed solution? If so then thats very strange. For the yellowing of leaves i would say you have your light a little too close (or maybe this is the tallest seedling)or you are overfeeding/overwatering . As for the brown spots if its just this one plant i would say you have splashed your plant when watering them without noticing and not cleaned it up, this is quite common, since the water remains on your leaves the light hits it and treats it like a magnifying glass.

Are you waiting for your plants to completly dry out before watering again?
Make sure you check your leaves after every feed for splashes.
Also dont give your seedlings so much food they barely need ANY at this age.
I would flush the plant just PH water and get 20% runoff and see how it looks in 12 hours.

 

[CustomGrowing]

Sorry budy got busy,week in a half old,coco,sensi coco a and b light every other feeding and cal mag on days I dont about every 2 days.this is the only one doidoing it out of ten and one slight nute burn.so I am stumped,its a brownish kinda rusty look,there was the big blotch and then this little dot showed up.I had some temp problems ,and pH with the coco most likely,just seeing if anyone has had it and knows what it is.I appreciate it man!

Much of the chlorosis seen in our area on trees is actually iron chlorosis or chlorosis caused by a lack of iron in the plant tissues. Iron is needed for the formation of chlorophyll, the green pigment in leaves. ... With more severe chlorosis the leavesbecome pale yellow and develop brown spots between the main veins.

This would make sense but as you said this is the only plant, are you doing a single food mix for a single plant, and maybe forgot ro add iron to rhis plants mix?

 

[Blitz35]

Can anyone help me diagnose what's wrong with my autoflower?

i haven't used your nutes in the past, nor have i grown exclusively in coco, but i have had this happen on a few grows when restarting with old soil, the nutes are washed out, especially phosphorus (in my case) which is essential at the start. Your plant seems to be showing the very same symptom. The blotch, the red/purple vein down the middle of the leaf, to me, points to a lack of phosphorus. Now is it locked out? (again, not sure what's in your old coco mix), or is it simply missing? Either way, to me, this seems like an issue with phosphorus.