Who's giving a hand one of you "register and ask immediately" guys, loosing the whole arm.
3 compost 1 perlite, 4 compost 1 perlite, 5 compost 2 perlite, 47 compost 19 perlite... However you feel comfortable.

You asked an advice and you got it. I'm done with you and you were the last "register and ask immediately guy" I responded.
Happy good growing.