Total Newb - Clones Yellowing

Hello. I am a total newb in growing anything really.


Setup:


2 14 gallon tubs, one a reservoir
2 small oscillating fans
Advanced nutrients for veg state.
oxygenated water with 10 air stones. 5 in flower bin, 5 in reservoir
1 rotating water head pump in flowering bin
CO2 dosing via a filtered 3-way 3 gallon water system with yeast/sugar in first two, final filter stage through pure water. Doses a few big bubbles every 5 seconds
220 CFM outtake
3x3x6' tent
2x125Watt CFL
1 500WATT LED
Water heater set to 72
Constant tent temp 77 degrees
Humidity around 33
pH at 6.0
water ppm 55


Bought the clones in rock wool? two weeks ago and have them in 6" net pots. water is just below the media. I reset the plants a few days ago and the roots were popping out everywhere! So that's good I guess.


My question is why the odd coloring? They were green as green could be when I got them. Now they look a little sad, purple and yellowish and slightly wilting.




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Can't see your pictures. You will need to fix that!

I can see em just fine. Thumbnails don't work though. But they are links.

Just thought I'd add what I did to fix the problem.

In this case I was using R/O water and the PPM was way too low. I supplemented the appropriate amount of mag/calc and they started clearing up and growing.