PLEASE HELP

Hello, so i am going into week 3 of flowering and some of the large leaves near the bottom/mid section of the plant have been looking unhealthy but i am not sure what is causing it. I am watering every other day about (whenever the soil is starting to look dry)

Hey l0gikz, kind of looks like an old cal-mag deficiency that was taken care of, maybe combined with a little tip burn from nutes. Reason I say old is I remember you mentioning something about a cal-mag def earlier on in your grow. Typically a cal-mag def is a little more reddish-brown in colour. I wouldn't fret too much, those won't recover but keep an eye on normal leaves, as long as it doesn't spread you're good.

it is on about 5/12 of my plants, but not on any of the new leaves. today is my nutrient day and i havnt increased the quantity of food, so, idk what it may be =/ when i had my old cal-mag issue none of the leaves looked like this

calmag def usually looks more 'spotted'.

What is your water's pH? Has that changed at all?

-spek

It starts like you saw it but if those leaves were down below you may not have noticed them, eventually they go something like what you're currently seeing. Remember, the damage from a def will not go away, those aren't new leaves, nor is that problem new in the last couple of days, you can also see the original def towards the ends/before the dry ends. I'd just keep an eye on healthy growth for now and ignore those leaves.

Is this an indoor or outdoor plant?

they are indoor and the symptomes as shown in the picture have only appeared over the past 2-3 days

Still looks like a calcium def to me, could be that your ph is off, which will make it worse/faster. Check your water, should be 6.3-6.8 ideally, somewhere in that range. If it's not, you can get ph adjusters (google), filters etc to get your ph in check, then add cal-mag with proper ph water to keep it from spreading. your current leaves will not recover so worry about healthy growth and keep an eye on that to tell whether it's under control.