Aero - 2nd Week of Flowering - Spots on leaves, kind of puffy, claw looking even

Hi,
New dude here. I am in my 2nd week of flowering in an aero system and my leaves seem to be developing some spots, like discoloring, yellowish...and kind of puffy looking, like they wanna split or something. Here's my stuff:
Aero system - I felt uppity and bought a 'store-bought' system this time - 15 site botanicare, using 8 of the sites
System mag pump on 1 min/off 5 min
13 Gal res
2x 600 watt hp, vented - 12/12 cycle
'Nother 400 watts of led's
Lots of air to res
1100ppm - Humboldt nutes, grow, micro, bloom, sea mag, prozyme + Hygrozyme
I flush res weekly - Last week res was at 800ppm
Room stays 68-72
Res temp stays 67-69
ph 5.8-6.0
The photos labeled 'ig' are Iced Grapefruit, 'mk' is Master Kush.
After I took these pics my first impression was they are getting too much water, like they were going to explode or something. After nosing around the forum it could also be too high ppm. What do you folks think?
Thanks much!

I think it looks like a def coming on. Are you sure about the 800 ppm, ( to me thats about EC 1.6, right? )

Im in soil and also coco, ur in aero.

The leaves are taco-ing a bit as if trying to conserve moisture.

What height, all over plant or at top or bottom, ie Primary nutes or secondaries ??

I agree, mag. deficiency starting... Mixing micro first (a must with a 3 part) to r.o. water? Or possibly... I like to run aero or n.f.t. a little lower p.h. (5.3-5.5).

Another ? Are you cleaning res. Weekly or flushing?

Thanks for your replies. The plants are now about 4 ft tall, and the discoloration seems to be only at the top. Right now the ppm is at 1120, ph 5.75. I use only r.o. water for flushing and re-fills. I flush weekly and will do so again tomorrow. These 8 plants are drinking about 3 gal a day, sure seems like a lot, but holy crap, they grow literally a couple of inches a day, they really spurted when I went to flower.
In the past I kind of had a problem with over-nutes and had to interdict myself, but now, being in the 1100 range at this point, is that too low?
Thanks!

If it's only at the top ur looking at a mobile element - n, p or k