Indoor grow, damage to leaves

From a fellow grower: I’m 11 weeks into a white widow autoflower, indoor, 4 plants. It’s been perfect so far other than they’re 5 feet tall. Soil. Fox farm nutrients. 1000w LED full spectrum. 20/4. The tops of two of the plants look like this. Light burn, nutrient burn? Deficiency? Please help.

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could you fill out a support ticket?
may need some cal/mag but really need to know more about your conditions…

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Without knowing anything I would say its PH lockout “Nute burn with a deficiency”

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You’ve got a calcium deficiency. Are you adding Cal Mag? What is your Ph?

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With a TOTAL lack of detailed information…looks like nute lock up.

IF you don’t have a PH n PPM Meter set…get them. $20 online.

Flying blind if you don’t.

Strain; white widow autoflower
Seed from ILGM
Soil in pots
System type? NA
What is strength of nutrient mix: Using the fox farm recommended schedule
Indoor
Temps; Day, 70
Night 60
Humidity; 60-70
Ventilation system: bathroom vent fan, with small fan for circulation
Size AC, Humidifier, De-humidifier, …None

What else are we missing?

The ph was low, 5.5, added organic garden lime. it’s up to 6 now.
Fan leaves on one plant look much worse.
Phosphorus test said it was low, added bone meal. 12 hours later, no change in leaves.
What should my next steps be? Wait to add more lime, or will 24 hours later now at 6.0 be as much as it’s going up from the last dose?
Thanks all.