what do you think this is and how do i fix it i believe it to be a mag deficiency due to cal overdose from cal/mag and hard water i flushed and fokiar sprayed w/ epsom salts help iam a newbe
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I believe this to be a mag deficiency due to calcium overdose....used cal/mag w/ hard water ..... have since flushed and foliar sprayed w epsom salts.... what do you think would love some feedbackok guys sorry about the weak post just learning, here we go. strand is white widow they r 7 weeks old about 3 1/2 ft tall and 4 weeks into flowering, sys is 2, 1000 w/hps for flower,2, 1000 w/mh for veg on suncircle. co2 @1500ppm to 1800ppm, ph5.8 to6.2, nutes 700ppm at veg increasing to 1500ppm and flowering at 1500 to 2000ppm, growing in rockwool , watering twice a day 45 mins. w/ 1/2 gal. a hr emitters, growing area is 10x10. Hear is a run down of nutes flora nova veg, and flowering, sm 90, big bloom 0-10-10, and cal/mag i mix 1/2 to 3/4 strength vent every 2 1/2 hrs, temp @ 70to 85, humidity @ 40 to 60 percent adding more pics updated w/ proper date all new pics i am adding are of the same plant seems to be my worst one leaves are turning brown and crumbling to touch the one single leaf pic is beginning stage and one pic of overall view of crop hate to see what would happen if i let it go another five days w/o help thanx to most of u for being patient w/ me
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Looks like the start of Mg def, but looks like you caught ti time. Also looks like the leafs are transpiring (leaf edge curling) more water than there are taking in

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thanx for your input but they are still getting worse any other suggestions besides what ive done

well now. we all loe posters like you!!!! + rep for not being a douche and actually studying your problem before blindly asking for advice. now IMO if it is a Mg def. you caught it very early and def did the right thing by adding the cal mag when i had the Mg def. it showed up as rusty little spots on my leaves not so much as fading betweeen the veins AKA chlorosis. but either way i figure your on the right route...
actually reading and showing some effort!!!

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"A wise and frugal government, which shall leave men free to regulate their own pursuits of industry and improvement, and shall not take from the mouth of labor the bread it has earned - this is the sum of good government." ~ Thomas Jefferson

always studying when not working but this got to me bad really stressin want good results these kinds of sites really help and thanx for being hear its nice to get other input

quite possible but from my limited experience the curling of tips is more often than not caused by nute burn. very subtle overages on nutes or improper Ph's cause curling more than overwatering... usually ppl are so scared of overwatering because everyother poster says "overwatered" lol... it may just be me but from the second i started looking for proper info on growing it usually says in bold letters that overwatering is a common problem. (i think that alone caused a bunch of really dumb NewB's to underwater plants or to water plants with too high of nutes cuz they only water once a week or so. i realise u may think ima NewB but read through a buncha threads for News an youll see it overstated many times over.

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"A wise and frugal government, which shall leave men free to regulate their own pursuits of industry and improvement, and shall not take from the mouth of labor the bread it has earned - this is the sum of good government." ~ Thomas Jefferson

they r in rockwool hard to over water

it reall is nice huh... thats how i feel at least im grateful to be a part of the RIU faminly an hope to see you become a part of it as well. hope to see YOU in the grow journal section soon posting something about how you cant keep up with plant growth because they are just so happy these broads eat more than you can throw at em!!!!
on another note like i said i really do think you are on the proper route to putting an end to your problem.Cal Mag stopped my leaf spotting problem but you really do need to watch the ph. dont expect the spots to go away but DO expect for the problem to not spread to any other leaves. if it does stop what you are doing because its not the answer. im sure you know this already but it's very hard for us to properly diagnose YOUR plant. we can only provide a lil nudge toward the right information. the plant hospital section has a really good link to a really long list of deficiencies and really great explanations as to why each problem occurs (although some of it looks like jargon you kinda have to be into bio. they even separate different problems into immobile (micronutes some types of N) nute lockouts or def and mobile ( N-P-K and other major elements) nute lockouts and def.

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"A wise and frugal government, which shall leave men free to regulate their own pursuits of industry and improvement, and shall not take from the mouth of labor the bread it has earned - this is the sum of good government." ~ Thomas Jefferson

yea you would think... but like i said watch that ph. especially if you didnt soak the rockwool in ph'ed water before you put them in there. Rock wool has a high ph i assume you did since they made it this far but if you added more recently it could account for a higher than normal oh. esp with top feed systems. but i think you got your answer already.

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"A wise and frugal government, which shall leave men free to regulate their own pursuits of industry and improvement, and shall not take from the mouth of labor the bread it has earned - this is the sum of good government." ~ Thomas Jefferson

i forgot to ask this but are you already flowering? because if so i may have no clue what the problem is... I know plants react to different nutes differently in veg compared to flower...

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"A wise and frugal government, which shall leave men free to regulate their own pursuits of industry and improvement, and shall not take from the mouth of labor the bread it has earned - this is the sum of good government." ~ Thomas Jefferson