CalMag

How important is CalMag to our grows. I am using the Aurora organics, and CalMag is not on any of their feeding schedules. So I forgot to use it.

How often should I apply it. Thanks to all that reply. J

If coco coir 100% for me

I used to use it for coco, until I started washing and buffering it. Now I use it to do two soakings of the coir (7.5ml per gallon of water, pH 5.8 ) before potting, and never again during grow.

Same for my calcium-hungry veggies like tomatoes and peppers.