whats wrong with my plants?

If its not one thing its another. I'm in week 4 of my first grow. In FFOF soil. Cabinet grow. I had some nute burn about 2 weeks ago, but plants had bounced back since then. Now this. And IDK what the hell this is. Someone please shed some light and give some reccomendations. Thanks folks.

Over watering.

It looks like a cal def on pic 3, but if it's only week 4 and you're using FFOF I doubt that's the case. What are the temps like, what/how much light, how far from the canopy, how often do you water(with any nutes?)

i water every 3rd day. i'm doing 24/0 cycle. and temps are steady around 75-77. havent been adding any nutes bc the soil alone was burning the plants.(I changed soil at week 2.)

any chance this is a mite? just asking...

looks like over watering

I don't see how that could be but I'll not water for a few days I guess. The leaves are really brittle in these spots. I would have thought overwatering would make them really limp and soft.

Also I have 3 plants going. This is only showing up on one of them.

Hows your pH?

what type of water are you using?? r.o.? tap??

I'm using distilled water. I'll check pH of water and soil today. Honestly didn't think I needed to check FFOF bc 90% of the soil growers on here swear by it.

Hi guys, I'm a 1st time grower, and after 3 weeks my plants are a steady 2ft already.. I've been giving 24/0 light every day since I've started, I wanted to start the flowering and turned my lights off @ nite. The next day 2 plants looked as if thy died. Can any1 help pls. I've flushed my soil wit water, and have put my lights back on permanent again. Is there anything else I shud do.. Ps where I am its very cold @ nite. Cud tht be why my plants have taken a turn for the worse. Pls help

You aren't suppose to intrude on someone else post. Post your problem yourself

24 hours later and my girls are looking a lot worse. Someone please telle what's going on with these. I don't want to lose them.

What have you changed in the past 24 hours? PH should be fine, but you might want to check it. It could be causing a lockout. Alan if you make your own thread in plant problems or newbie central you'll probably get more help. Also in w/e forum you decide to post in, add pictures. If temps are fine and you're only 2 weeks into the FFOF, which means you're fine all your macro and micro nutes, then the only thing I can think of is either insects or ph.

Yeah you need to get that pH in check. If it's fucked up your plants are locking everything out and will continue to do so until you fix it.

PH or insects. Got it. How do I fix both of those issues?

Checked ph. It's alkaline. How do I bring it down?

My local place only had sulfur. I added about four tablespoons to each plant.