I seriously need help, things are getting worse!!! Please help

just to confirm what i think based on what youve said and shown

• FROM http://www.amsterdammarijuanaseedbank.com/Growguides/grow-guide-index.html
  
  Cannabis leaf heat stress
  
  If you look closely you will see the brown cannabis leaf edges in the center that are indicative of cannabis leaf heat stress. This damage looks allot like nutrient burn, except cannabis leaf heat stress occurs only at the tops of the cannabis plants closest to the lamps. There's only one cure for this... get the heat away from the cannabis plants, either by moving the lamps or moving the cannabis plants.
  
  Nutrient solution cannabis leaf burn
  
  There's a good chance that this cannabis bud was subjected to nutrient solution burn. These symptoms are seen when the EC concentration of hydroponic solutions is too high. These symptoms also appear when strong nutrient solution is splashed onto the cannabis leaves under hot HID lamps, causing the cannabis leaves to burn under the solution.
  Many hydroponic gardeners see this problem. It's the beginning of nutrient burn. It indicates that the cannabis plants have all the nutrients they can possibly use, and there's a slight excess. Back off the concentration of the nutrient solution just a touch, and the problem should disappear. Note that if the cannabis plants never get any worse than this here, then the cannabis plants are probably just fine.
  
  This figure is definitely an over-fertilization problem. The high level of nutrients accumulates in the cannabis leaves and causes them to dry out and burn up as shown here. You must flush with clear, clean water immediately to allow the roots to recover, and prevent further damage. The find the cause of the high nutrient levels.​
  
  

most curling of the leaves is on the tops, I also thought heat caused it but I moved all lights up and room temp has not been above 85 for a week or so now. I have seen heat burn on my mothers when they get 4" or so close to the bulb, this seems different, some plants that were over 1.5ft from bulb still show same signs with the curling or tacoing, also some plants that were closer to the bulb show no signs of curling. I read having a purple streak in the stem of leaves is a sign of mag dif. I def have purple streaks!!! ill take some more pictures tonight, lits come on in a hour

Hey man, im drunk so sorry if problem has been solved but I'm not readin the whole thread, ahha, but looks like heat stress/overfeed

no way its overfeed, ppm have always been below 500 ppm until now, these plants are over 5 feet tall

read into iron deficiency. it looks like iron to me

Most deficiencies start with yellowing, pic 3""suggest burn, but whatever hit em with cal/mg good luck guy!

Magnesium (Mg) - Micronutrient and Mobile Element


Magnesium helps supports healthy veins while keeping a healthy leaf production and its structure. Magnesium is significant for chlorophyll-production and enzyme break downs. Magnesium which must be present in relatively large quantities for the plant to survive, but yet not to much to where it will cause the plant to show a toxicity.


Magnesium is one of the easiest deficiencies to tell… the green veins along with the yellowness of the entire surrounding leave is a dead giveaway, but sometimes that’s not always the case here. In case you have one of those where it doesn’t show the green veins, sometimes leaf tips and edges may discolor and curl upward. The growing tips can turn lime green when the deficiency progresses to the top of the plant. The edges will feel like dry and crispy and usually affects the lower leaves in younger plants, then will affect the middle to upper half when it gets older, but It can also happen on older leaves as well. The deficiency will start at the tip then will take over the entire outer left and right sides of the leaves. The inner part will be yellow and or brownish in color, followed by leaves falling without withering. The tips can also twist and turn as well as curving upwards as if you curl your tongues.


Excessive levels of magnesium in your plants will exhibit a buildup of toxic salts that will kill the leaves and lock out other nutrients like Calcium (Ca). Mg can get locked out by having too much Calcium, Chlorine or ammonium in your soil/water.
One of the worst problems a person can have is a magnesium def caused by a ph lockout. By giving it more magnesium to cure the problem when you are thinking you are doing good, but actually you are doing more harm then good. When the plants can’t take in a nutrient because of the ph being off for that element, the plant will not absorb it but it will be in the soil… therefore causing a buildup. A buildup will be noticed by the outer parts of the plant becoming whitish and or a yellowish color. The tips and part way in on the inner leaves will die and feel like glass. Parts affected by Magnesium deficiency are: space between the veins (Interveinal) of older leaves; may begin around interior perimeter of leaf.

Oh yeah. mag def..
i have had it before

clip your fingernails too man

lol yo come on that's my scissors

so you don't think heat stress, nute burn lets see what else did people say

Listen mate we are all trying to help based on what you have said. If that's your BUD in your avatars you should have all elements of your grow on smash. And you should know what's wrong or at the least be able to give us a few options as to what you think it may be.

The guides are great but as you can see by the picks I posted on magcal d e f yours looks nothing like it. Hence the other responses.

Have you added any calmag now

YOOOOOOOOO.....SORRY IS WAS WORKING....that is cal/mag def......it shows differently from strain to strain.....and for who ever said his temps too high ....haha you need to get you game tight when you use that much co2 you always need to increase the temp ...85 is perfect , some people even spank 90 pushin 1500ppm as long as the roots stay nice and cool you will grow a beast.....his temps are fine, his roots are perfect with the chiller, and running a nice UC system i highly doubt hes burning them with lamps , that would just be some noob shit 4real thats the first lesson people learn.....your feeding needs your plants are hungry..............do what i told you and if it was my grow and ill treat it like it is for a minute since ive been helping you....i would dump the rez and make a fresh batch and make sure all my elements are there and be done with it, i also think you can up the feeding but you def have a cal/mag def ....peroid...

Purple strips, praying leaves, light green top of plant, low ppm rez(i would give them more). , 83deg(good)...... necrosis......what else do you want, for the plant to walk over and slap you and take bottle off the rack and pour so out for his dead homies.....lol.....ive had the problem b4 and im sure 1day i will have it again....it happens.....

Ps....those are not "burnt tips" thats necrosis "dead patches".....i dont think i have ever seen cal/def look the same in two diff plants EVER...but after you have been doing this for years your learn how to weed out shit based on other things....dif are like a chain reaction, some also cause other things to happen (other elements locked out)because one element is missing....or if it was ph being off you would see other micros on the high or low side start showing their poor availability....its just like when you take your car in and they say , "well is it clicking only when you turn or is it all t time" if its when you turn then its your cv joints an d blah blahblah......same thing here....yiu gotta look at everything and narrow it down. Comon guys "over feeding" in a 500 ppm rez ...lol not happening