The lower leaves of some plants are yellow, then d...

Hey bud, the lower leaves turning yellow are due to lower amount of Nitrogen in your soil. For the next week or so and throughout the vegetative cycle your plants need more nitrogen to grow as potassium and phosphorous will be needed now for flowering. You did well to give less nutrients and next time you’ll grow this strain you’ll feel comfortable giving them more. As for the buds being that big already in pre-flower would tell me you might be in week 2 of flowering. It’s not uncommon to produce massive yields with this strain as she is an indica heavy weight. Keep doing what you are doing, maintain your PH in the range of 6.2 and add bloom nutrients if not already done 👍

Hey there Paulolo, it looks like a magnesium deficiency because the older leafs are affected first and the yellowing between the veins. I dont think it's an N deficiency because the plants look even a bit too green. Probably not lock out either as the problem would be severe and you're light on nutrients. It's hard to say without seeing what you're adding, but if you're not adding micro nutrients eg calmag, then add some right away, if you are, then up the dosage. Alternatively you can make a cal mag spray and spray twice/three times a week for two weeks and the the problem should stop spreading almost instantly. Just as a side note with regards to using lemon juice as a pH down : dont use it because the pH down effect is temporary and too short , meaning that withing a couple hours there's no effect from it anymore potentially leading to fluctuations. You're right on track as far as i can see, sometimes old leafs just die and it's not a problem. Anyways, hope this helps ! 🚀

@Paulolo03 Hi mate your plants are growing well and your buds growing fast is a good thing The flowering stretch seems to be slowing down so nows the time to start feeding the bloom nutes with P+K Try to keep your ph at or below 6.5 this will allow your plant to take up the whole range of nutrients it needs Happy growing