Hey.
So from looking at your diary and not this pics. I see light splotchy shading in between your vains.
This is light mag with probably some sulfur in the mix also.
If you have any espom salt or a calmag you can add it to your water.
In most cases, calmag isn't an issue with DWC, but if your ambient tap water is low, then you can run into problems. Some tap is low on mag some calmag. But you are definitely experiencing light mag issues now. As I depending on your water, if its under 140ppm it's soft and you will need an additional calmag sup. Even with a ppm higher than 140 ppl still run into calmag issues. Your feed looks fine and very solid ratios. But one thing them trios need, you have to find out if it need a hard or soft water one. Depending what you water should determine which trio you buy. Buy the wrong one and it'll have adverse effects such as you see seeing.
Hope this helps some. Good luck buddy.