Deficiency?

Here’s the skinny. I started to use cocoa and perlite mixed 50/50. I’ve done it 4 runs now, and it’s getting worse each time. With General Hydroponics at normal doses under 1000 ppm. Ph about 6.3. I used Cal mag for supplements. Right when I changed to flowering my leafs start to splotch as with a Mg deficiency. Many leafs fell off. I flushed and used another brand nutrient and it seemed to work. I went back to GH and the leafs started to splotch again. Now the leafs are dying and drying up. I want to keep using GH as it’s been so good for me for ten years. I feel that the nutes are being locked out but I don’t know why.
Any ideas out there?

have you thought about putting dolmite into your soil,maybe that might help stabrlize the ph,also have you tested your runoff to see what the ph is after.

trapper said:

have you thought about putting dolmite into your soil,maybe that might help stabrlize the ph,also have you tested your runoff to see what the ph is after.

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No, I havent considered ph as a problem. i will check it. tonight