It has been working for ya so why change it? I usually don't up anything till I see a sign of needing it. I am in dwc so I can administer really quickly faster than soil. My numbers for NPK is 1-0-0 what is yours also my micro has calicium and mag in it so find out what else you are using has it in it if anything? I hope I make since lol

don't underestimate your grows! They are solid as fuck!