Thanks for the incredible write-up. I just ordered my TDS meter so I should be able to be a little more accurate with my nute schedule.

I was wondering how you added a specific PPM to your solution? I have a 25 gallon reservoir, so I add a set amount in tsp/gal. Would I mix the nute in a separate container to get the PPM before adding to the res?

Thanks for your help, and thanks again for the write-up!