guanito

Hello RIU! I am an amateur grower. I only grew 5-6 times before and have never tried any strange experiment. This year I want to mix my own soil and want it to be organic. I am going to use: 45% peat (pH:6) 120litre/31,7gal 30% perlite 80litre/21,1gal 15% earthworm compost 40litre/10,5gal ~9%...