I don't mind, that's why I'm here. That is the generally accepted method. I personally harvest when I have about 20% amber as the amber is really the THC degrading. I wait until about 20% amber so that I can be certain there are no more clear trichs and that's really the only thing you want. No clear trichs and not too many amber unless you like a really narcotic smoke that will knock you on your ass. Then wait until it's a little more amber.
All of the "interesting" compounds found in cannabis are called cannabinoids.
The scopes can be acquired online or if you have a Radio Shack near you that will work.
Nice. Good catch. Funny how "let it go" is the answer around here, but now we've found you aren't using the full strength on the nutes and your ph was toxic.Pulled a few more yellow leaves w/ brown spots off the plant again today. The soil is still pretty saturated from the flush so no need to water yet. I took a look at the back of the FF Tiger Bloom container and realized that it calls for 2-3 tsps per gallon of water - like an idiot I've just been using 1 tsp per gallon because that's what the FF Grow Big nutes called for and I assumed the dosage would be the same.
Anyway, I mixed 2 1/2 tsps of the bloom nutes w/ a gallon of water, checked the pH - pretty acidic, added a drop of pH up, brought it to 6-6.5, so I'll use that when I water and hopefully the leaves will stop going yellow.
I agree the nutes weren't the cause of the problem, that was just a good catch! you don't want to flower plants with less nutes than possible. Feed aggressively! We want to grow bud here, the more the better!
These picturese look like your PH plummeted. He's right, you need to test that runoff and get your ph up. They look good, and you're almost done so nothing drastic needs to be done at this point, but you should try to get it back in line.