Could be any number of things. Some details about your environment will help us help you.
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.
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
• 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.
2x4 tent Vivosun 1000 have two in the tent hanging 20inch from top of plants. Fox farm soil stays 70-80 and rh is 45-55.
1 leaf does not make a plant. No one will be able to say anything for sure one way or another, but I wouldn’t even hazard a guess with 1 leaf.
Lower leaves is where most problems show up. Lower leaves will wilt and fall off on their own. No damage to a leaf is repairable. If that’s your only bad leaf, I wouldn’t sweat it. I need a picture of the plant for any suggestions.
How are you measuring PH and TDS?
How about an overall picture of plant in white light? Like stated; one leaf does not make a problem.