The tips burning like that can be one of a number of nute excesses. A support ticket can help us help you, with identification of your soil type and nute dose being important.
Leaf canoeing is often a sign of the lights being too close.
What strain, Seed bank, or bag seed
Method: Soil w/salt, Organic soil, Hydroponics, Aquaponics, KNF
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
Temps; Day, Night
Humidity; Day, Night
Ventilation system; Yes, No, Size
AC, Humidifier, De-humidifier,
Co2; Yes, No
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