So im working on 3 mothers. Thé 2 cheese are acting like they have magnésium deficiency. Ive added calmag. Not réally any effect . Pictures show issue, thé first To is top ride and underside of cheese , thurs pic is thé gg4 looking perfectly healthy , il thinking not disease because thé gg4 doesnt have it… . Bottom 2 sets of leaves yellowed and fell off. Amy ideas what is going on ? What i should do ?
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I’d not worry too much as it’s on older growth. If it spreads onto the new growth give us a shout 
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I’d up pot maybe give a light feed and add a tea spoon of Epson salt into the mix ! Give them a week see how they look .
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It is slowly moving up thé plant it seems . Thé edges of thé top growth
It started at these bottom two nodes and has moved up. Thé bottom two nodes on this one , thé fan leaves fell off…But on thé other it is not. It wont let me post both pics as a new user.
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Theyre in 5 gallon pails at thé moment. I was hoping To keep em in there. My flowering pots are 50 gallon fabric.
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Could be a PH problem.
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What’s in the 5 gallon bucket looks like the soil could be the culprit!
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If you’ve ruled out insects/mites of any kind, it check the runoff pH. I get rusty holes in leaves at high pH levels.
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My first thought was bugs, my second thought was the soil aka micronutrient issues, third was “that sure looks a lot like outdoor soil instead of potting soil despite the added perlite”… So, basically check for bugs if none, get new potting mix… my 2 cents
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I did not use BX or HP promix. like i usually do . It was not available . I used organic vegetable and Herb mix.
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I thought bugs at first. My soil is organic… But I figured if it was Id be seeing thé same problem with other strain GG4 . Its only on thé cheese im thinking thé cheese is being fussy with Her nutes. But maybe I should not time bugs out entirely.
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Sorry didn’t realize you were in that big of container ,is it possible there overwatered for the size of the plant it’s a easy mistake in a large container?
Its spreading but seems slowly. I removed the leaves that looked bad the day I posted this.
Now I’m noticing black spots along the stems of the leaves that have the dots.
I cant get a pic of the spots . They are too small .
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It still looks like bugs to me. Black dots are usually bug poop. 
Try taking a white piece of paper and putting it under the leaves. Give it a good shake and see if anything falls on the paper.
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If you have a smartphone download a magnifying glass app, good for close-ups…
I have been using cozy Magnifier and Microscope on my Android…
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Something seems to be feeding on the leafs. I’d say what @ReikoX says is correct and do a little more investigation to see if you have some critters causing your problems.
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IMHO, Bugs, and not enough perlite in the soil for proper drainage… Plants will have all sorts of problems if the roots dont get that needed oxygen… And make sure you let the soil dry out somewhat before watering/feeding. Thats soil looks kinda like mud… Good luck to you 