First time hydro. Leaf coloration and blemishes help

I notice theres darker green around the veins and the margins are lighter green. Not sure if this is just uneven Nitrogen or if its lacking Magnesium.

The first pic is using Element Nutrients Complete Crop and Myco+ in DWC
pH is 5.9 it floats from 5.5 to 6.2. The water temps are 74 cause its in a closet until the last 2 skunks finish flower in 1 -2 weeks then it will go into the tent
that is 69-70F on the ground and ventilated. Im using Hydroguard and Myco+ in both buckets.
PPM is at 875
I topped them this morning too.

The second pic is using General Hydroponics Maxibloom Lucas Formula. 21g per 3 gallons of water.
PH is 6.0 and it also floats from 5.5 to 6.2 slowly
PPM is 900

They both starting week 4 of veg.
Thanks in advance.

Having the same issue mag deff

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What kind of light are you using? Temps seem a bit low.

Mr. Mohaskey said:

What kind of light are you using? Temps seem a bit low.

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Using 2 Giixer Full Spec LEDs 1000W but 110W per light actual usage.
Just using the veg switch. Air temps are 75-77F. Water temp is 74F
They are in the 2X4 grow closet growing until the super skunks in my tent are done.

I use a Mars Hydro TS3000 450W actual use light with dimmer controls in my 4X4 tent.

Gotcha. I use LED too, and found 82-85 works better for me. Have to use supplemental heat to get temps up. Also use a humidifier as my normal RH this time of year is below 30, below 5 when outside temps get into single digits.