u/NeuroMantis666

Hi there, I'm relatively new to growing trichs and at the moment I have some bridgesii, some pachanoi and some bridgesii tbm. I potted them in a 70/30 mineral/organic mix. The mineral part is mostly pumice, expanded clay, and some biochar. The organic part is organic sifted soil with a little bit of worm castings.
I have done some research and I read that if the soil mix is done right there is not really a need to extra feed the plants when watering.
I am not sure if I need to add some nutrients for them or if it's better to just keep giving them plain water.
Would they benefit from calmag or low nitrogen high phosphorus fertilizer added in the water from time to time?