Mag Deficiency?

in amended super soil
They are under a 315lec
Have been showing this for past few weeks

tried epson salt In water and foliar spray, and dolomite lime top dress. the soil was very rich didn’t think I would have deficiencies so early only about 1.5 months

I have only been using compost tea (recharge) and water . Occasionally I top dressed with glacial rock dust kelp fish bone meal and blood meal