Is it nutrient burn? Is it a deficiency? Proper feeding suggestions.

[Lisaalexstark]

hello all,
so im on my first grow, its been a whirlwind of events. Ive lost some plants, I've had good success with others. Some of my plants i plain ol lost the tags and dont even know what they are. ive got some autos and some photos. Ive bought the majority of my seeds from seedsman but I also had 2 plants that are doing really great and just entered flower that are bagseeds, im currently also germinating some dispensary seeds obtained accidentally when i bought an eighth or so from them. anyway i basically bit off more then i could chew. i did the obnoxious "im a seasoned smoker, ill automatically grow my plants at grade A++ quality in ten days" not so much but you get the point. So I started off with a king plus 1000w led light, most people know its not living up to the advertised quality. So after some research I bought an 135w HLG Quantum board.

after electrocuting myself trying to wire some pc fans together for a an initial "tote grow", which was rubbish, so my wife helped build improvements to our closet along the way.

so now although i have the correct tools to grow beautiful plants, i have many issues. at first it was about learning about proper Ph. i was over feeding, keen to rush to process. but what i really need is to knuckle down and learn how to give the plant healthy feedings because im always under feeding with nutes giving at 1/4 or 1/2 strength but then the hungry plants are then deficient. and while theres some knowledge out there i cant narrow down what type of issues i have with the plants. Ive battled them and some times incorrectly, now with plants in flower with a nitro toxicity, ive flushed it and no avail. i grow in soil, ffof so at first giving them nutes was giving the plants too much nutes and theyd be burnt. but i was misdiagnosing it as deficency until i came to this forum (thank god) and although I had a ph meter, it ended up being not correctly callibrated and with no way to fix it i needed another... and then another.. and now i have proper tools for ph and ppm readings. and because of that i wanted to see where my ppms were in the runoff compared to a chart of where plants at there place in growth should be. and i was really off!! so i gave them a feeding with a ph and ppm proper for each plants growth. and i still see issues. but im not sure, is it burn? is it deficient?
i have a purple queen plant that ive had in 12/12 for 5 days or so now with no signs that its starting to initiate flowering. also the plant although super overcrowded, seems super frail. with the leaves looking almost like theyre flopping about.
this is nitrogen deficient? or calcium deficient?
i actually cant seem to find a reason why these leaves are so spiny and thin.. why are they so twisted? its throughout two or three of my plants in the weeks 1-3 flower. light light green too, some with light green or white tips.
it mostly this on the inside and underside of my purple queen
this is a super silver haze clone, vegging for quite a few months now. i have ALOT of leaves like this. is this hunger or burn? light green/yellow edges of the leaves, and moreso on the tips, which are brown or pointy
burnt? hungry?
this is an older picture of this amnesia auto, but the nitrogen toxicity is show here, the dark green leaves, clawed down. its much worse now. greener. how do i fix this? why didn't the flush fix it?

so i guess i have a few questions and id really love this to get into a lengthy tutorial really for what are we really shooting for in a feeding. should i be concerned that my ppms dont add up if the plant is healthily growing? what are some ways i can differentiate nutrient burnt leaves from deficient leaves? should i clip those leaves? there really isnt anything ive come across at least that really breaks it down. ive seen alot of cartoon pictures to depict it but im wondering if anyones come across information that really does a dummys step by step way of telling the difference and how to treat them. keep in mind my ph has been a steady 6.3-6.9 its really just a level of how much too feed at what stage. how to correct deficiencies and with what exactly?

if anyone can jump in on this id really love to get alot of input. what were some signs that taught you how to define burn and deficiency in your plants? do you monitor what your ppm readings are and act on them?

 

[fanleaf]

Picture 1 looks like it had some nute burn and also maybe a calcium deficiency after the nute burn. Fox Farm ocean forest soil is very rich in nutrients and you shouldn't need to feed your plants if in that soil usually all the way up until flower. Once you overload the soil with nutrients not only does it burn the plant but then once the soil is too salt filled it will usually swing the pH level enough to lockout some or all nutrients so that's probably where some Calcium deficiency came in. The good news is it's only on the very lowest Leafs so I would not sweat it. Those leaves will not recover and that's okay. Do not clip Leafs off because it may make the plant look prettier to you but the plant is sucking things out of those leaves for a reason! It needs it. If you cut the bad leaves off then the plant will just start taking what it needs out of other Leafs and you'll be chasing the problem until you have no Leafs left.
Now onto picture number 2. This plan actually looks fairly healthy. The lighter green colors are very common when a plant is entering flower. It's almost a lime green on the newest growth and hormone changes in the plant make that perfectly normal going into the start of flower. As far as the leaves twisting like they are Without Really knowing a whole lot you should understand that some strains will do that regardless. Yours does not look very serious at this point and all in all the plant and picture number to looks pretty good so just try to keep your ducks in a row.
Picture number three looks to me like a textbook case of needing some calcium. This does not mean that you don't have enough calcium in the pot with the plant. It could very well be that your pH level has locked calcium and magnesium out so the plant cannot uptake what it needs. You are in Fox Farm ocean forest soil so with this plan on its next feeding I would stick to quarter or half strength food and a dose of calmag and I would pH that straight to 6.8 to 7.0! Growing in real soil good pH level is usually 6.2 to 6.8 however calcium and magnesium are more easily absorbed on the higher end of that scale.
You also mentioned that you flushed the plants right? Or at least some of them. I'm not sure what you did is your flushing procedure but I can tell you that what I strongly recommend for a proper flush is three times the volume of the growing pot. So if you're pot is a 3 gallon pot I would slowly run seven to nine gallons of good water through that pot. You have a lot going on here especially for being a beginner and I know you realize this so giving advice on 20 different things is very tough to do without being there and being able to check things out very thoroughly. Normally going into flower I would be against advising someone to flush the plant however sometimes that's the only way to clear things out. I don't think I would flush them again at this point but just try to get things under control. Picture number 4 is definitely nutrient burn. Picture number 5 is nutrient burn again with what looks to be a slight Calcium deficiency. The last picture of the Autoflower that has nitrogen toxicity we'll probably not used very much at all. Too much nitrogen in flower can really put a halt to flower development. If it looks even worse now I would almost guarantee the yield will be very low. Again I am not sure of how you flushed your plants but if you flushed with three times the capacity of the pot it should have lightened up or at least started to within several days.