Could someone tell me what this could be?

1.5x1.5 tent. Mars hydro 3000 led . Growing in coco . Ec at 1.8 ph was high at 7… temp around 25deg

Have a few leaves like this ? 2nd week of flower

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Welcome to the community ! If not already I would add some cal-mag on water day.

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Welcome @Danielb12345 I agree with @kellydans. Add some cal-mag to your watering, probably one of the most common deficiencies

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Cal mag will help you I’m thinking.

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Thank you I will do that

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Sorry, so I can use it in my reservoir? As I have a recycled watering system ?

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I think it would be fine. let me tag in @peachfuzz is more familiar with your system.

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U can use it in rdwc but there is ways of mixing nutes so they dont bond with each other and not work right. Depending on ur nutes id give a list of nutes u use sonit can be figured how to mix the solution up. Silica calmag nutes ect

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image

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Ok we professors original a and b and that’s it.