Greetings! Newbie on my 3rd grow & have a problem with spots on leaves & yellowing. Not sure what I’m doing wrong. Should I be worried?
Strain: Amnesia Haze Auto
70th day (other strain in tent not affected)
Environment: Advanced Nutrients,
3x3 Tent, 2x Mars Hydro ts-1000, 20/4 lighting
Looks like a calcium deficiency, what’s the input PH and run off and are you supplementing a calcium product. A phosphorus deficiency is generally accompanied by a calcium deficiency as well 
I’m with @OGIncognito add some Cal-Mag next watering would be a good choice.
Happy growing welcome to the community 
I’m with @OGIncognito.
Some runoff numbers would be helpful, I know AN doesn’t want you phing but it’s wise to still have the proper meters and tools to test.
If I had to guess I would say runoff numbers are high leading to the calcium deficiency you are seeing.
Welcome to the neighborhood 
I have to agree with 
. Some calmag should fix you up as long as your ph is in range.
Thanks for the feedback!
PH input is 6.1 - 6.5, but PH meter shows a range 3 - 4. I’m going to flush and confirm if the meter is accurate.
Thanks!
Should add Cal-Mag if the PH is low?
Also, not sure if it makes a difference, but based on trichomes, I think harvest time is within the next 4-5 days.
Add cal-mag baseed on small rusty spots on on the leafs. You might verify your ph meter with a fresh clean bottle of 7 PH solution.
