Is this discoloration bad? Or normal?

Both of these plants seemed like they were growing great however one of them is developing an odd texture and the leaves are rolling and turning yellow. And the other is discoloring on the outside of the leaves. Here are some pictures.

Not sure what strain this one is.




This one is a Master Kush.

Any other information needed to help diagnose, I will be glad to provide.

Thanks a lot everyone.

~Unfused

I've been doing some reading and apparently it could be a number of things. To many nutes, missing certain nutes, not enough watering. Not sure what else I should be looking for to help narrow it down. One of them has a couple spots on it so I checked under the leaves to see if it had bugs or anything. I didn't see any and nothing else in the grow room has bugs.

I have tomatos, onions, lettuce, yellow beans and my marijuana plants in that room.

If I was you then I would just ease off of the nute strength you are using..they look like they are in hydro yes? If so, then it is easy to just dump the water and give them fresh water with little or no nutes and see if they start to look better...don't leave them too long with nothing at all though or they will start to go limp-y looking and yellow...but if they feel kind of dry and tough then it is overfertilization.

You could also be watering too frequently. Which can make the leaves rough and yellow, and downward pointing.

I am currently watering using ebb/flow once every 24 hours for 15 minutes. I've been using a half strength solution until yesturday I decided to go full strength but those affects had already started happening.

They are in rockwool cubes surrounded by clay pellets. The product I'm using is from general hydroponics consists of three things that comes with a chart made for what stage you are in on your grow. FloroVeg, florobloom and floromicro I believe are what they are called. Total PPM in my water is 965 when I checked this morning.

Does that help narrow it down at all? Oh also, my PH has been getting a little high lately. I've been working on controling it but it keeps getting up to 6.5. Could that also be what is causing it?

im not a hydro pro ..but they look dry. like said above, they have the under watered droop going on. one watering every 24hours might not be enough..as the ladies get bigger, they need more water. i would water at LEAST twice every 24 hours for at least 2 days and see if that fixes it..i would almost put money on it that they will perk right back up after getting more frequent waterings. i dont think its nutes..they dont look burnt at all to me..at least not bad enough to do anything about. good luck

The only leaves that are yellowing are the bottom ones.. I was reading earlier that sometimes the bottom leaves will just start to die off and you are supposed to clip them. If I try to do 2 waters per day how do I tell if I am doing them good rather then harm?

the plants will tell ya if it worked. leaves will start to stand up again and look a lot less "droopy". it will happen quick too, so its not like u are gonna be waiting around a week or two for results. its gonna happen the same day as u give it more water, maybe the following day..buts its gonna happen quick. like i said..im not a hydro ace by no means, but the more i look at the pics, they just look like they are thirsty. if i was a betting man, i would put it all on adding another watering cycle to them and that paticular problem will be solved. good luck, let us know what happens.

I watered them at lights on at 4:15 they've already perked up. I was told that it's normal for them to droop a little between waterings. I'm watching for the time that they start to droop again. How fast is to fast to be redrooping?

Or how long after drooping should they be watered again?