Jilly Bean SOG strange deficiency in flowering week 3...halp!

I could really use some input here. For the record I've got 23 Jilly Beans on an E&F 4x4 lit by a 1000w Adjust-a-Wing. I use Hydro Fuel Bloei with Liquid W-8, Massive, and Floralicious.

And here's my story. About three days ago I noticed a single leaf had turned "rust" colored near the tip and dried up. I'm not one to freak out about a single angry leaf so I pulled the light up a notch or two, leveled off the Ph and called it OK. Yesterday I go in and three more plants have joined in and another three are showing the earlier signs of whatever this is. In it's earlier phase the leaf seems to lose some of it's 'green' and 'shine' and that same area slowly turns rust colored while it curls up angrily. I've also just noticed the petioles of the affected leaves have turned purple, showing red near the very base of the leaf.

After some panicking and searching online I decided the problem could be a phosphorus def, as it appears in the "marijuana plant and pest problem solver" that's floating around on so many forums to look alot like what I've got going on. It makes a bit of sense as the solution had only the "Massive" bloom booster and lacked the usual phosphorus loading bloom booster. So I added a healthy dose of KoolBloom and did a foliar spray as well.

Here's where I'm confused though. In my last crop of Grand Daddy Purple I had a more typical phosphorus def in which the lower leaves turned an almost black purple and curled downwards. Ph analness and koolbloom solved that, but this looks 100% different.

I'm lost, if anybody has suggestions I'd love it. I have no clue what's going on here.

Originally Posted by GreenChile

Fuck that noise, its Magnesium..point and match

Wanna know how I know, cuz im gonna ask if your using cal/mag and your gonna say no......right?

Actually I use LOADS of it. Raving shitloads. I was plagued by Cal Mag problems to begin with. Now even the water I top off with is brought to 250ppms with CaliMagic before I do anything. 250ppms is insane high, most people I've talked to go to 100, maybe 150.

Jilly Bean likes to show yellowed edges with a mag def, but the edges don't fry and get crispy. These edges are super crispy.

As an update, it's gotten much worse, look at the fan leaves I just had to cut off. Some seem to turn rusty red, some this sort of death grey. Either way they're curling up and it's the top bit of the plant that's effected so if it's a nutrient it's mobile.