The hydroponic thread reminded me of some criminals who Darwined themselves out of employment in a nearby Mayberry-like village.
They rented a closed up factory building, and filled it full of marijuana plants growing under many, many plant lights. They had so many lights lit up 24/7 that the weed growing business was using more electricity than the rest of the town! Small town people sometimes are especially curious about new neighbors, and someone noticed the huge amount of electricity being used.
The hydroponic weed business was ended with a pre-dawn raid by federal, state, and local law enforcement. The locals had an exciting topic of conversation for quite a while.