Mayday Mayday!

[Starris]

Hi all. I'm a first time grower and I've actually been having it pretty easy so far, but disaster may have finally struck. I hooked up my carbon filter last night, since the plants were getting to that point, and this morning I came home to a hydrometer of 25% humidity and this. (I took these pics after spraying them down in a panic)

http://i.imgur.com/FAuQHSK.jpg
http://i.imgur.com/5mALqRV.jpg
http://i.imgur.com/lTxSfx1.jpg
http://i.imgur.com/83IrqNV.jpg

The claw! This really surprised me, since I haven't even used nutrients in the last couple feedings, just seaweed and recharge, but I realize now that it was likely due to the humidity. I've been going with a solid 45%+ RH so this was a bit of a shocker. I guess they just drunk up so much that even just the base soil was enough to overdo it in ways of nitrogen. I decided to just spray them down with water more often to keep it up, so I did for a few hours of the morning, but when I came back from school I came to something even worse.

http://i.imgur.com/WJzbaHc.jpg
http://i.imgur.com/GEoXb07.jpg
http://i.imgur.com/xXY3Nl0.jpg
http://i.imgur.com/7Sp3Hpl.jpg

As you can see, the claw is still there, though I kind of expected that it wouldn't go away so quickly, but now I find this strange silver tinge to the edges of my leaves. My first thought was it must be mold from me spraying them down too much earlier, which would make sense, but it doesn't look like any mold I've seen online, and I'm really just at a loss. I stopped spraying them down, and instead added two bowls of water to sit and passively up the humidity a bit until a humidifier I orded arrives. I don't know if it's a deficiency, mold, pests, or what have you. Any help would be appreciated!

 

[Royal Nugs]

It doesn't look too bad to me. Like you said, the dry environment caused the plants to increase water uptake. Back off the nutes until you get the humidity under control.

 

[NebulaHaze]

You could try putting the exhaust fan on a timer so that it only goes on for a few minutes every hour. That might help keep the humidity up closer to 45% again, but I could see smell leaking out of the tent when the fan is off though, and the heat might become a problem, so that is an imperfect solution.

If it's really dry in the room where the fresh air is coming from, you might consider getting an evaporative cooler. When the humidity is below 35% they are really effective at bringing both the humidity up and the temperature down at the same time, and don't use a whole lot of electricity (only 65 watts for the one I linked to). If it's cool and a good humidity in your room, then the fresh air going into your tent will be too

I wouldn't worry too much yet, your plants still look great!