On the outlet brass screw is hot silver screw is neutral . If you look at outlet small opening hot big opening neutral . to see if box is grounded remove outlet plate insert one probe of tester into small opening on outlet and touch the box with the other probe if you have voltage you have a...
I have one of those it is on top of rock I feed mine hbh crab and lobster bites and it has grown considerably lights are cree leds 24 blue and 24 white over 57 edge