Leaf problems in indoor grow

plant pic

Been feeding plant around 1000 ppms with ph of 6.0… started noticing ph was slowly drifting down in runoff water started using 20 percent tap water with my ro water. Flushed with 5 gallons of ro water 2 nights ago 350 ppm and 6.8 ph first runoff check was 5.5 ph 1100 ppm as flush ended was down to 500 ppm and ph of 6.2. Does this look like magnesium or potassium…maybe both im not sure only my 2nd grow using lotus nutrients. Any help is greatly appreciated!!!

Looks like it’s magnesium deficient, with nutrient burn possibly.
Are your lights turned up as well?

running the xs2000 from viparspectra at 50 percent

Maybe locked out, what medium are you using with that Ph?

I would definitely dim that.

mother earth coco coir using lotus nutrients with cal mag and carbo flush… should i not be at a lower ph in the coco

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mother earth coco coir using lotus nutrients with cal mag and carbo flush… should i not be at a lower ph in the coco