Billy the Mountain
Well-Known Member
Who?I know people who have nutrient specific probes, so they are able to check more than just overall EC. I agree that checking runoff isn't necessary, and that understanding proper plant nutrition is more important. However logging runoff data can show you trends which can be useful in better dialing in your grow. I don't do it now, but I've done it in the past, and it has helped me to improve my grow.
I didn't think individual element analysis was available outside an expensive lab test; if so, it's a very recent development.