Thanks Stinky.....those were the exact intructions I was given by AN! Mix CalMg to 50ppm then add ferts and Ph. I'm dropping the Barricade for now.....for that one he said to let it sit overnight in the res before mixing ferts....otherwise it can creep up as it (slowly) dissolves into the water. BTW, the Querkle is looking superb...

Aloha