Could someone help identify this deficiency...

I thought it was nitrogen and flushed twice giving her just water for the last week, but I'm not sure. It's really on the lower half.

Anyone have any suggestions?

It's hard to tell from that single picture. But it looks like it could be a Magnesium deficiency. If you say it's on the lower half then there's a good chance it is MAG, it usually shows on the lower to middle part of the plant first. Looks like this is outside, what medium and nutes are you using?

Hey rickymac21 I sent you a pm

is it the very bottom fan leafs only ? if so pull it off. who cares you could of spilled nutrients on the leaf during watering . and its normal for the very bottoms to get nasty looking , that's why we trim from time to time . the pics you sent were not the best .

I'm sorry about the bad pic, and it's on 5 or 6 leaves bottom half of the plant, it feels like those leaves are dry and crinkly, here was a pic about a week and a half ago. I haven't spilled anything on it , another member thought magnesium .

How is your new growth looking? Any signs or spots of the same thing spreading? Did you measure your PH, both watering water and runoff water? And like rickymac21 asked, what growing medium and nutes are you using?

New growth is ok, and medium is fox farm. Nutrients are g.h. flora bloom and flora micro. Feeding recom. Amounts every other watering.

If you are using that nute line at recommended dose you may very well be locking something out from an overdose/ph problem. Kinda hard to tell without a ph reading, do you have a ph pen so you can find out what its at?

Sent from my SCH-R930 using Rollitup mobile app

I don't have a ph pen, but I can get it tested today, and I will. Thank you and I'll be back

Also, is gh not a good product? If not, what's the best thing to use, and I am in 3rd week of flowering
deadhead
2 Barney's vanilla kush
5 northern light x big bud

Itll gwt ya to a harvest but there are better feeding plans out there. Gotta consider whats important to you in a feed. Is price an issue? You trying for huge yields or personal? Amd lastly and most importantly do you want to go organic or stick with synthetics. All in all a lot to consider, but i have seen people pill a respectable harvest with cfl's and miracle gro

Sent from my SCH-R930 using Rollitup mobile app

Hi Natro, thank you and I don't want to be too cheap, so what would you recommend for flowering. I want a big yield if possible.

You must have a grow store in your area if you picked up the gh line. My suggestion for a bloom booster is to look at house and graden. They are hands down one of the best nute companies available imo. But that said your current nutes will get ya to harvest, usually takes a grow or two under your belt to start fine tuning a nute system and get good production in my experience so just stick with gh for a second, read as much as you can if you feel like it maybe grab a packet of H&G shooting powder. Despite what some say this stuff really works and can be used with other nutes, problem people usually run into is they dont dial back their other boosters and end up burning the plant late in flower leading to a funny taste in the end product so my advice is to lean towards the side of cautiin with that stuff

Sent from my SCH-R930 using Rollitup mobile app