Grow Mediums How much water & cal-mag to rehydrate with?

[PapaEmeritus]

Hey friends. I'm making the switch to coco and finally got all the requisite stuff ordered in. I'm using Canna Coco in brick form and will be rehydrating 1/2 a brick (10L worth) for now til I have more room in my tent. Roughly how much water should I be using to rehydrate, and how much cal-mag (if any) should I add in? Just tap water, nothing fancy.

Thanks!

 

[Mr. Sandman]

You'll wanna flush the coco first really well. Then pretreat it with half strength nutes ec should be about .6-.8 and ph 5.8-6.3 alot of people say run calmag with coco I have not tried it yet myself the formula I run don't call for any i wanna run some in another grow for comparison but this is my first grow so don't have the best advice on the calmag