My soil for my plants are going to consist of FFOF, Perlite, and Bat Guano. Should I use a bat guano with a veg or flowering NPK?
If you can find one with a diverse N-P-K profile you could supply all the plant's requirements with 1 food. I have used an 8-4-4 Seabird Guano made by Vital Earth. Rather than having to buy a couple of different fertilizers, a good all purpose guano would be my pick. HTH chunk