J
Jslo313
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Check for mites.Heyya folks, been seeing more and more of this lately, these rusty lookin leaves. Trying to figure out what it is. Been affecting the Outter most leaves, mainly the ones furthest from or hidden from the light but now seems to be happening more and more. Pulled the first few off as they were small and didn’t seem all that important but I’m starting to get worried. About four weeks into flower, give or take, indoor grow. Temp and humidity well controlled. Any ideas as to possible causes? Been looking for signs of pest and can’t find any. Nutrients have been very minimal but haven’t cal/mags anything. I use a third tap water mixed with distilled to get some of the micros in there. Not much of a science, just know there’s some calcium in the water. Lol. What gives? Any ideas or possibilities? Or am I overlooking something terribly obvious?
Well... I don't know. I agree that it seems to emulate from the veins. I was wondering if you could get a magnified picture of the spots. I'm curious if the discoloration is on the leaves or a change to the color of the leaves themselves.
Me too. Or thrips. I’m betting Ca def.Was thinking cal defici when first seen
It looks like calcium deficiencyanyone else think maybe it's just a cal/mag defficiency? been perfectly PH'ing my water to 6.5 but haven't tested runoff in well over a month. when I did, it was pretty low but I really didn't know what to do about it. lol. maybe hit it with some 7.0 water, and test runoff?
Clcium up takes best around 6.0 6.1 pH level so if your run off is lower consistently then there is your problem flush with pH 7.neat water Untill you have passed 3-4 times the size of your pot and the run off is coming out around 5.9. Then resume feeding with a lower ec and 6.5 pHIt looks like calcium deficiency
Do you use led lights
If so move them up a bit flush the medium and then add 0.2ec of calcium it doesn't look mag deficient so I wouldn't add any of that because the issues off the back of mag toxicity is apretty bad situation
You can also foliar feed calcium for faster absorption
Has it been flushed everLooks like a deficiency. A dose of calmag wouldn’t hurt. Just remember that those spots won’t magically turn back to normal, so at this point you want to keep it from worsening.
You’re a few weeks early for it to be the normal life cycle IMO, and it could be a nutrient lockout, but if you haven’t been feeding it much, I’d say it’s likely a lack of nutrients.
It’s definitely not water
That would be helpful. When I had a problem with spider mites, I would cut off a fan leaf and look at the bottom under one of those $30 microscopes from Amazon. A good jeweler's loupe works well for that purpose, as well. Cutting off the leaf made it much easier to see if there were any critters living there.Look on back/ bottom of leaves.
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