Second Grow: Variety!

That is white fly 100%, they infest shit and are a pest, you will want to blast as many of them off with just some soapy water and a vacuum. No point in treating the plant with pesticides this close to harvest but you will want to look into bud washing to help clean em all up once its chopped. They don't tend to go into the buds and stick to the bigger leaves but they can get stuck in bud if they are flying aorund doing dumb shit like they do. You can also pick off the affected leaves that are heavily infected and burn them or toss em outside, if its close to harvest the plant will be starting to fade anyways. Best Of Luck!

The best way to tell if this is just natural coloring (which, in truth, would be odd but probably not unheard of) is to see if you can easily pull one of those leaves off... if it comes off with no effort at all, it's mostly likely bud rot. I'm not convinced it is, though.... usually bud rot will show up as completely dead sugar leaves and these just have an odd coloring to them... so yes, it MAY be the lights! Good luck!

The spots look like some sort of pest on first glance. They could be mites or aphids as I know ladybirds like to feast on them. It would be best to start a IPM or integrated pest management system into your grows if you want to continue growing long term. This can be putting stuff in the water to kills things in the medium to spraying the plants in veg so they have some extra defence to the critters that want to eat them. If we had more focused shots of the spots we could help identify it better, My guess is still mites and I do see some white flys on them as well. They are little pieces of shit, but much easier to kill then the mites. Given you are in flower the treatment options are limited but not zero. soap and water then washing the plant in the shower/outside is an option to get rid of most of them. Then at harvest doing a bud washing will help get rid of the letovers. Calcium deficiencies are visible from the top of the leaves not the bottom, pests hide on the bottom to avoid predators. FYI: We will not be notified of any reply or tag [@] in the questions part of the website, if you need to reach out with other information use your DM "direct mailbox" in the bottom right hand corner of the page. it looks like a little paper airplane icon. Best Of Luck!

O that sucks, this is bud rot 100% caused by Botrytis Cinerea https://en.wikipedia.org/wiki/Botrytis_cinerea There is no cure or quick fix, you need to remove the affected buds asap and spray it down with peroxide to help deactivate the spores should be start to fly aorund. It would also be best to increase the ventilation in your tent and lower the humidity to under 40% to help deter this pesky mold from finding a sweet spot and growing. If you have any UV lights they can help kill off the spores as well. I don't see a tent being used to grow these or a fan pushing air aorund them so this might be why it took root in your plant. a little preventive maintenance can go a long way but sometimes it just fucks us over. Buds affected with rot can not be smoke or used in any way they are now garbage. FYI: We will not be notified of any reply or tag [@] in the questions part of the website, if you need to reach out with other information use your DM "direct mailbox" in the bottom right hand corner of the page. it looks like a little paper airplane icon. Best Of Luck!