Can I mix EWC into SS adv #4?

I want to get a bag of EWC to add a little organic food into my mix. Anyone see any issues mixing in say 20-30% EWC into Sunshine advance #4? For anyone unfamiliar with that bag it is mostly peat with some mycor and coco.

Fuck yeah. You can go up to 50% castings it's all good. If more peeps did this they would see what a ripoff nutes really are. Go on with yer bad self....

What he said... mix that shit in and enjoy.

yes you can and it will help your soils microbial life, happy growing.