I started the week by flushing the plants. It was time. The oldest two plants have two weeks max. The run off started at 1900ppm and went down to 400ppm. By that time I had pumped about 60 litres through the four of them. The tap water is already 300ppm, so this is a good level I think. The leaves are responding. I can see the nutrients being drawn out of them. They are withdrawing.
I am also looking at trichomes daily now. The mature plants are 1/3 clear, 2/3 cloudy, with a few amber. The younger plants are 2/3 clear, 1/3 cloudy, with no amber.
I couldn’t wait any longer. I cropped and chopped 3 buds from under the canopy and dried them slowly on a metal plate over boiling water. It took 1/2 hour, but it produced a nicely dried pile of smelly weed. If I lost any potency in the process we didn’t notice. We got really really stoned. If this sample is any indication, I think it will easily be my best grow yet in terms of potency. Now I’m curious about the weight.
@Garreweedlover, I’ve only grown autos so far. I’m planning on doing two 4 foot square tents next time. One will probably continue to be autos while i learn to grow photoperiods.