Help, I dont know whats wrong with my baby!

I woke up today to a sight I didnt expect would happen...

I water my babies when the rockwool is completely or mostly dry, with lightly fertilized 60-70 degree aerated and ph'd water...

As you can see in the pic one of them isnt doin so hot... and I dont know why.

Anyone have any ideas? Im open to anything that will keep my plant alive!!

The leaves are all drooping waaaay low, and they are also showing some discoloration in some leaves. The discoloration is basically light green spots on the dark green leaves, I need some help with this one guys, pleaaaaase!!

The only thing that was different for this one plant was there was some green stuff growin on the top of the 'wool. My hydro guy told me it is a bacteria that can affect my plant, so he sold me some stuff to spray the green parts with as well as any plants with powdery mildew, which was a problem on some other plants in the room...

The other plants are looking great all the mildew and green bacteria disappeared within hours, but now my plant is losin it and Im stuck scratchin my head.

I also posted a pic of the stuff I sprayed them with..

Thanks for readin guys!

looks to me. over water and have you been feeding already. id pull or just leave the ill leafs. first stop over warering or ferting the plant should be ok if you sort the problem your having.

or have the leafs been pressed up to a wall or window or somthing.

Okay, I guess Ill just give it time... I hope I dont lose it though, it would be my first casualty

i would say over watering

My first plant did that and shortly after it died

Now i know it was down to over watering, let it dry out a bit and hopefully it will get better

Fuck I thought I was being good about that shit too

Came back in today and its still wilting, I havent watered it for a day and theres still some water in the 'wool...

So consensus still says overwater? How long should it take the plant to bounce back?

The width of the fan leaves on this one was skinnier (less resilient, more sensitivity) than the other plants fan leaves.

I just dont want to lose my baaaby

looks like to much fert how much did you say you use

I had the same problem with my plants a few months ago and it was over watering. I slowed my watering and realized I was using nutes way to early. Also, I don't know exactly which spots you were talking about but I also had the same type of discoloration and it was because my light source was to close to the plants, but this did occur alot later in the process with my plants. Hope it helps man.