Brown patches on leaves, thought it was calcium deficiency symptoms.

Could be calcium. I don't really think it looks anything like your typical Potassium deficiency. Potassium deficient plants have burnt leaf tips which spreads down the serrated leaf mardgins and works it's way towards the center of the leaf. I don't see anything resembling that very typical Potassium deficiency pattern. Calcium though, can manifest in the way your plant is spotting. Calcium can display in many different ways. It's not always speckled spots. Sometimes it can be spots like what your plant is showing. And calcium often shows up in late flower, which is where your girls currently are. I'm not a fan of 1 bottle nutrient lines. But on the flip side i'm not a fan of 30 bottle mixtures either. Since your indicate that you are using a P-K booster of 54-32, i doubt you are lacking in potassium. Not to mention coco is loaded with potassium already. An excess of 1 can cause a lock out of the other. So if you are in excess of calcium, you can lock out potassium, and the reverse is also true. I would start using a better nutrient regiment. I would flush that girl out with pH'd water and then re-feed with a 3 part line like GH's 3 part Grow, Bloom, Micro, with some Fulvic acid and calmag. Thats all you need. The rest is just fluff.

Its K deficiency. This late into flower you could add top dressing if organic or add more to you feeding in nutes if running nutes, and still have time to fix it. You got 3 or 4 weeks left on those buds bro. Their all white hairs man. Even when my buds swelled and all the hairs turn orange, a second set of white hairs comes and they turn orange.. then the thrichomes start to turn amber. I PROMISE you got atleast 3 or 4 weeks bro. Ps your not looking at the correct thrichomes. Tour looking at the thrichomes on your sugar leaves. Those will always be more mature. You have to look at the buds, since your buds haven't swelled yet you can't really see the thrichomes on the buds themselves hence the reason i said you got 3 or 4 weeks left. Yeah all breeders claim 8-10 weeks or whatever but it normally take 12-15 weeks to finish autos. Give that girl some potassium and let her swell bro. Please consider selecting me as the answer so I can be entered for a chance to win grower of the month contest I would really appreciate your support growmie 😊 🙏

It is potassium deficiency. Severe potassium deficiency is spots on leaves. Tips of leaves brown and straight as well. Especially In flowering. Flowering npk ratio is 1-2-3