My plants are in the fifth week of flowering in my leaves at the top I getting brown spots on them what is causing this
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I would suggest more pics and pics of the whole plant it self in natural light and some will throw some knowledge at you …
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Possibly cal mag deficiency, but need a lot
More info to diagnose. Type of soil, strain, nutes, ph and run off numbers. What’s the environment like? I would search the forum for “support ticket” then fill that out and post it here and the pros will chime in shortly.
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A support ticket will help us help you. Can you please fill out a support ticket? Please include what type of water you are using (RO, distilled, tap.)
COPY/PASTE the below list into your forum post.
Answer these simple questions the best you can.
If you do not know, or do not use something; Just say so; Or post
NA (non-applicable)
• What strain, Seed bank, or bag seed
• Method: Soil w/salt, Organic soil, Hydroponics, Aquaponics, KNF
Soil brand and type
• Vessels: Pots, Grow beds, Buckets, Troths
• PH of Water, Solution, runoff (if Applicable)
• PPM/TDS or EC of nutrient solution if applicable
• Indoor or Outdoor
• Light system
• Temps; Day, Night
• Humidity; Day, Night
• Ventilation system; Yes, No, Size
• AC, Humidifier, De-humidifier,
• Co2; Yes, No
If growing Hydro some additional questions:
-DWC? RDWC? Autopots? Ebb and Flow? Other?
-Distance of liquid below net pot (DWC)
-Temperature of reservoir
-TDS of nutrient solution
-Amount of air to solution
Always try to upload a clear picture of any issues you may have to allow the community to assist you. Pictures taken under natural or white lighting are by far the best.
Add anything else you feel would help us give you a most informed answer should be included. Feel free to elaborate, but short and to the point questions and facts will help us help you in a more efficient manner.
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@King03 , need more information, better pictures. Thanks. 
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I would say you need to give ur plant a dose of cal/mag in ur next feeding but remember that the leaves wont go back to being normal they will still have the brown spots on them i would trim those leaves with those spots
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