Hey DGC,
This is my 2nd harvest, first with autoflowers. My first harvest was an incredible success, but my autos are rapidly deteriorating! This GSC OG Auto is about 10 weeks old. Started developing these spots around week 7. I though it was a Calcium deficiency, so I have been treating with Foxfarm Big Bloom and recently top dressing with Gypsum.
Using the same equipment from my first harvest with Photo periods: 2×2 tent, 4″ inline AC infinity, small circulation fan, dual SF-1000D with dual 32watt GE Bloom spectrum LEDs, Ocean Forest/coco/perlite mix in 3gal cloth bags, 20/4 light schedule, most of the Foxfarm line (big blo, grow big, tiger bloom, kelp me kelp you, wholly mackrel, open sesame, beastie bloomz, cha ching) according to schedule, with weekly recharge and Superthrive, RO water. I was hoping it was the one plant, but it’s starting to happen to my younger autos of a different variety as well.
Thank you for all you have created Scotty, Dude and Guru and thanks to the DGC community on advance for probably instantly answering this question! 🙂
I’m not familiar with the nutes. Check if you are overlapping anything. Probably a bloom booster disaster.
I started indoor growing with the Foxfarm trio; Big Bloom, Grow Big and Tiger Bloom. I never used their additional amendments and it seems you have everything else in their line except their best product Boomerang which is their rescue amendment. And I don’t see a CalMag listed, nor is your soil and nutrient feeding ph and EC or ppm.
First off I never used the trio at full strength mostly around 3/4 recommended strength and cut Grow Big to 50% recommended rate in flower, it adds way too much Nitrogen in the flowering stage.
I also run 40% FFOF, 40% coco, 20% Perlite so here’s what I would do. Flush heavily with ph water to get your ph to 6.2-6.5 and EC to 1.2 or 800ish ppm. On the last flush add CalMag, SuperThrive and Recharge. Wait a couple of days or when they are ready to be watered then mix Big Bloom at 100% recommended rate and add CalMag, SuperThrive and Recharge at 100% rate, that’s all. Big Bloom is organic and has a lot of good stuff in it and by itself won’t burn your plants further.
Hopefully by then you’re seeing healthy new growth, your old leaves will always look the same. I would then pick up feeding with just the trio, except cutting the Grow Big to 50% recommended rate. For a bloom enhancer, I would use probably just use Open Sesame the rest of the way.
I think you just tried to push them to hard with too much, less is more particularly with Foxfarm nutrients. Happy Growing 🙂
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And Coach Steve is correct as usual it probably is a bloom buster disaster with all those bloom additives.
I quit growing in ffof because of that shit. Went to coco/perlite mix with biobizz nutes and damned if I didn’t just pull my biggest harvest with autos yet.
This is what my auto i pushed 2 hard looked like last grow. I pushed her with bloom boosters just to see what would happen since I want to keep working with the strain.
I just looked at the list of things your using up there again. Autos really don’t need as much nutrition and that seems like a big lineup even for the hungriest photo period lady.
with all those boosters you really need to make sure youre dropping the amount of base nutrients youre using… all those boosters with the recommended dosage on those bottles will burn them every time… id flush, use 40% less base nutrients and lower the amount of boosters.. theyre really not necessary outside of week 1 and week 7