Confused about fertilizing indoor plants
I have about 55 species of indoor plants. I am still learning how to look after them and have made a list of each plant and their care from water, fertilization, light etc. I am confused. Some of the plants I have say to use 10-10-10 ratio of fertilizer. For the life of me I don't see any indoor 10-10-10, just outdoor 10-10-10..So what would a person do? Should I just take my 20-20-20 and half dose?