Ken Peavey wrote:
I've made it in the shade-thats where the outlet is for the pump. I've seen it done in full sun.
The objective is to multiply a microbe population. UV radiation from the sun would not help you. Being the tea is in constant motion, I don't see UV as being a problem. I think the sunlight would also promote algae growth. If you are pumping water rather than air, this algae would pose the problem of clogging the pump.
I suggest you try a batch in the sun and a batch in the shade, compare the results. I would be interested in hearing your report.