What Deficiency do my girls have?

Is this zinc or potassium deficiency or something else?

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I’m going to say magnesium .

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Cal magic then?

What light do you have?

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Mars hydro 1600 watt led

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Looks like you have some past light burn. Was the light quite a bit closer?

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@Covertgrower has you covered IMO, that looks light burn.

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Yes . I’d reccomend doing a foliar feed to get the Mag where it has to go fast . Some more info will help us figure out the “why” it’s happening so fillIng out a support ticket Will get you the best answers

Strain; Type, Bag seed, or NA

Soil in pots, Hydroponic, or Coco?
System type?

PH of runoff or solution in reservoir?

What is strength of nutrient mix? EC, or TDS

Indoor or Outdoor
Light system, size?

Temps; Day, Night

Humidity; Day, Night

Ventilation system; Yes, No, Size

AC, Humidifier, De-humidifier,

Co2; Yes, No

Looks like a job for some horticultural grade epsom salt in water and a spray bottle.

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It’s about 2 1/2 feet from plants. I can only raise about 20cm. Uploading: image.jpg…

How much epson salt in a water bottle?

The recipe is about 1tsp per gallon. It’s not light burn, it’s magnesium deficiency. Spray just before lights out. You can also add some to the medium.