Phyto said:

To me it looks like very early signs of a Ca defciency, any reason you're only doing 50% on the Cal-mag?

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Ladyhawk said:

I was afraid it would be too much calcium with the amount already in the main fertilizer. I was leaning towards that too, but I wanted a second opinion cuz I was like they can't need more calcium can they? But I guess they do

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Phyto said:

Really, the plants look good, if you're concerned about too much Ca, try kicking up the calmag to 75% and see how the plant reacts.

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Grownsince95 said:

Ca is immobie and mainly works like "bricks" the plant builds with. Once it's set in the leaf it stays there. What you're seeing now is a very slight deficiency that was present when the leaf in question was "built" This could be due to a growth spurt, a period of high humidity or cool temps and a number of other things. Any condition that slows down transpiration or outpaces what's available in the root zone at the time can cause a Ca deficiency.

Over time and exposure to the light those cells have broken down now and are finally showing their weakness. They were just missing a few bricks.

Responding to that past problem now can make the situation worse and cause a domino effect that affects your harvest.

If they were my plants I would look in my log/diary to check for any past environmental issues or changes in feeding that could be the culprit, monitor my youngest top leaves and move on. Many growers experience a slight Ca deficiency during the stretch and don't see it until it's back to normal growth rate. Then they chase their tails trying to fix a problem that's not there anymore.

Resist the urge to over mother them and pick your battles wisely.

Way more plants are killed by love than by neglect

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