Just joined, first post, need some help please.

[Beachwalker]

Soil Type = Vermont Compost Company - Fort Light compost based potting soil (linked)

Always adjusted my tap (not RO) water's PH for watering.

As for nutrients, I was told with this soil and the short length of time for Autoflowering cannabis that I really didn't need the addition of nutrients.

That being said, since the issue with this one plant and the leaves I did go by a small container of cal-mag to try and help it as outlined in an above post.

After the first watering of 1/2 recommended dose per gallon from the container and a week going by with the cal-mag addition for that plant, I continued to see more leaves at the top (even up to the small sugars on flowers) developing the spots and becoming what i would consider brittle and dry.

When it came time for the next watering, I gave the full recommended dose of cal-mag and seeing the same issue, I came online for some help.

Please let me know polishpollack if there is any other information needed.

Thanks again.

7 to 10 gallons maybe you wouldn't need to feed but in 5 gallons, eh? Kind of borderline (depending on the soil) I think your pH is too low your locking out, as I mentioned earlier, maintain a steady 6.5 for best results

 

[GreenMTNGrower]

7 to 10 gallons maybe you wouldn't need to feed but in 5 gallons, eh? Kind of borderline (depending on the soil) I think your pH is too low your locking out, as I mentioned earlier, maintain a steady 6.5 for best results

Beachwalker, thank you.

Looks like my eye is not so good with the matching color test route. Meter will be ordered.

 

[vtim802]

thats leaf septoria

 

[Beachwalker]

I don't think so I've never seen septoria that high up on the bud, it does have the black ring around the brown spot, but to my eye that's calcium, plus Op claims low humidity but maybe op can put up a picture of the entire plant

 

[vtim802]

yeah my bad, im dealing with a calcium issue (i think) and the spots were small and yellow. that dark ring around the spots got my attention