I can't believe you don't understand not ALWAYS necessary. Should be easy for someone so unbelievably versed in the literature. Of course it isn't always necessary when you have experience with plants along those phenos or clones or such and already have done all of the monitoring which is extremely expensive. Since you like using bold so much. Hey though, don't listen to the people who grow at home, and maybe it will work for you without any changeup for different strains and phenos for a couple grows. People here tend to be invested in making 10/10 grows work not 7/10 or 5/10. Dr. Bugbee is brilliant, and a worthy resource, but to act like people do this for no reason is just your ignorance. Just to make it a little simpler for you, not always necessary means it sometimes is. Many large grows re-use, some smaller growers do with some luck. Most of the commercials that do are getting regular laboratory testing. We don't have the luxury of having already tested many strains and phenos with expensive lab equipment or if something seems off with our staple additions and re-additions then we can do extremely expensive testing. Once again stop asking questions when you already know the answer that you want. Good luck growing.
