Leaves are dry, some curling, and damaged leaves

I am 4 weeks in flower - first grow. Doing coco with Pro-Blend, Liquid Karma, cal-mag, kushy kush, and bud candy - all 1/2 strength ppm is about 1650.

My leaves are really dry and seem brittle. They are dark green. Is this nute burn issue or lockout? Last feeding was just ph'd water. Attached are some pictures of leaves. but they started at full strength nutes, then have been backed off and now 1/2

I did a sulfur burn about a little over a week ago as they had bad powder mold and sprayed flouremite a week before that. Leaves were not looking

Any idea on what to do for the last several weeks of flowering? Less nutes? Flushing? Thanks


I was thinking nute burn so have backed off the nutes from full to 1/2 strength.
ph is 6.5

Yep Yep... Nute Burn... common problem......... But Question... why the nixing of nutes, their meant to work together, unless you really know how much NPK your giving, not a good idea to mix brands. Your PPM could be correct but your NPK be way outta wack.... deficient = ( older leafs so signs first) Nute Burn = all affected ... kind of how your plants look...lol .... No but sorry.. I want every grow to go well.. At 6 weeks its kind of hard to save em...... So I know you said you backed off the nutes.. but you gotta leach then come back with 3/4 nutes, then last week... 1/4 nutes.... you might have a chem taste (depending on your cure) but you can save your crop

Thanks, what do you mean by leaching them? Is that flushing them?
I am using the nutes as am because I know someone else who is doing the same thing and having good results. I hear what you are saying the nutrient mix might not be right. Also,there is a pro-blend chart the indicates all these can be used. Is this actually causing issues?

what kinda airflow you got going thru the room? that's a problem alot of the time, and over watering. Wait until they dry out before you water again, then water w/ water only. Once plants start coming out of it, (7-10 days) you can start em back on low doses of nutes and add additional nutes as the plants get used to em. Plus the airflow thing. Make sure you got an intake fan, exhaust fan, and (preferably)a fan blowing on the plants. I'm sure you know all this since you already been measuring the ppm and wat not, just thot I'd mention it.

Thanks, that is what I started to do - water with ph'd water (6.4) - I will let then get completely dry and than keep doing. My airflow is great - to strong fans, an intake, and an outake
I am going to keep it up and hope they come out of it - I am thinking I will let them go longer (6 more weeks) to make sure all the excess nutes are out before harvesting.
Thanks for the help