I say mg Def. 2nd opinion?

I am growing 6 northern lights x white widow in a 94L rubbermaid tub. It is a DWC sytem. I am using the advance nutrients non ph perfect lineup, but i do not have every bottle. Currently i am using the 3 part along with b-52. I have overdrive and big bud for when i start getting into flowering, but thats besides the point. I am starting to get some rust spots on a couple of the leaves. I'm not entirely sure if it has been getting worse or not. If it is, it is happening pretty slow. Also the leaves are curling a slight bit upwards. Kinda looks like that weird spikey look when the temps get to high. My personal opinion is Mg def, but i dont want to jump to any conclusions without a 2nd or 3rd opinion at least. Whats your thoughts? Oh ya forgot to mention purple stems as well

Sooo i took some pictures again and it definitely looks to me like the problem is getting worse. I checked my ph and ec. I was sitting at 6.1, I lowered it down to 5.6 and i'm at about 0.8 ec. Havnt had any yay or nay sayers, could really use some help on this one

Try a little MagiCal either way. it should help. I had this issue as well during my veg.

Doesn't look like Mg to me. Is it too hot under your light?

Definitely not. Its only under cfl's. Here's a few more pics of them about 10 mins ago. I'll progressively post, that way maybe it will make someone else's life easier if they have the same problem and hopefully someone else can accurately diagnosis.



Now that i am comparing the last 2 posts, it seems almost like it has slowed a little bit. possibly a bit too high ph??? I lowered the ph from 6.1-5.6

Heres another update with the progress of my sick plant. It seems a bit worse. It also seems as tho the new shoots are not affected. The burn on the leaf of the new shoot is from touching the light. I made a boo boo. I'm starting to lean a little more towards a cal def. i think. I added a little bit of cal mag as well, only enough for 4L of water, and my res is 94. I didnt want to over feed. better safe than sorry i figure