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@ElevenSixty6, yeah , i could see from your diaries but the rust mold will only destroy the leaves not the bud, so even if you do get it , it will not effect the bud but just due to damaging the leaves it stunts the plants growth which in turn affects the yield. Iv also noticed on here many people that grew " barneys auto wedding cake" also had the same spots on the leaves, if not most of the grows except for a few that use coco coir (not sure if there is a link) but yeah i think it is something to do with the strain because your blueberry seem to come out fine. Anyway all the buds you grow seem to come out nice lol, but yeah just thought id share some insight as im facing the same issues
@Sensivybez, no I am almost certain it wasn't rust fungus or any sort of mold. I keep a clean grow space, and if I'm not mistaken mold and rust rubs off to some effect and these spots were almost like abrasions on the leaves. I have blamed it on a calcium deficiency along with not having any co2 maybe causing transpiration issues or something like that. But I added Exhale co2 this run so hopefully I see a difference.
@ElevenSixty6, i understand but i have had the same problem with the same "auto wedding cake" from barneys and it produced little orange rust spots on the leafs , once rubbed over within a few days the same abrassions appeared with the leaves turning red and yellow like fire and black spots in some places, this is the after effects of rust fungus, and my point is to confirm this is true in your case , the fact it keeps returning most of your grows during flowering?, because as far as im concerned your feeding looks normal to me , if your using a new medium you shoulnt have nutrient issues , all your buds come out looking fine to me , reason being as i have the exact same problem and its a coincidence that you were growing the exact same strain as me an have the same symptoms on your plant as mine. Right now all my leaves are pretty much dying as the bud develops. Also to note the orange spots are so small they are hard to see unless they get big , and then within a few days it burns the leaves so you may miss the first signs, anyway good luck with the C02, il keep you updated , but im 100 percent
certain that is a form of fungus , as the same leaf problem comes back every grow since the auto barneys