Spotting on leaves...

Just wondering if anyone had any ideas of what the spotting on the leaves are or what they may mean. Started to get them a few days ago on some lower fan leaves now I got them on a newer cola. Growing outdoor with supplimental lighting in pots with ocean forest potting soil but I have no real way of measuring the Ph. This is the only clone of the 4 I have that has spotting. I started feeding them fox farms grow big every other watering as of last week.

Looks very much like spider mites.

They suck the juices from the leaves from the underneath, leaving little white dots on the top of the leaves. I'm not saying for certain that's what it is, but if you look underneath the leaves with a loupe, scope or magnifying glass, I'll bet you see the little dark bastards running around.

I don't see any webbing in the picture you provided, but that's another sure sign as well. Little tiny spider webs among the leaves.

Check for that, then report back.

Yeah...I was just gonna say, take a close look under the leaves to rule out bugs.

Yeah I've had a few aphids but that's all I keep checking under the leaves really closely with my eyes and looking for webs but I just dont see any I'll check with a magnifying glass and report back. But I was thinking it wouldn't be bugs since none of the other plants are showing signs.

Just used a pretty strong magnifying glass and saw no signs of bugs either.

Killmepleaseididntwanttom said:

Yeah I've had a few aphids but that's all I keep checking under the leaves really closely with my eyes and looking for webs but I just dont see any I'll check with a magnifying glass and report back. But I was thinking it wouldn't be bugs since none of the other plants are showing signs.

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Then I'd isolate that problem plant in a different room or closet for now, just to be safe. Just put it in with a couple to few CFLs for a week or so to see if the problem gets worse or not. Mites can definitely be overlooked, especially in the early stages of an infestation.