Help with identifying spots on leaves

[ThisGuy744]

First time grower here, can anyone identify what this spots on my leaves are and recommend actions to take? I'm growing using dwc hydroponics, my reservoirs ph is 5.8 and I use general hydroponics flora trio nutrients and cal mag nutrients. My grow tent stays from 70-85 degrees with 40-55% humidity and I use an led light about 26-28 inches away.

 

[TripsRabbit]

They could be sensitive to magnesium, locking out calcium. That's one reason I like using calcium and magnesium separate. They work against each other and not all plants like the same amount of both.

 

[ThisGuy744]

So what do you think would work to fix this? Add more calcium or reduce the amount of magnesium? I thought it might be calcium deficiency from some other info I read so when I added more nutrient water to the resevoir today I ph'd it to 6.3 so the plants could better absorb the calcium.

 

[TripsRabbit]

Once you see the spots the damage is done, it can't be reversed. If it doesn't get worse you fixed it. I would get some water soluble garden gypsum and some epsom salts.