I have an outdoor water fountain on my front porch.wondering if I have to turn off the water pump and empty the water out..before it get to the freezing point this winter...what shall I do? Or can I keep it running during the winter season?..Do I need to bring it inside?Thank-you..enjoy your day..

I have an outdoor water fountain that holds about 40 gallons of water and I am having problems with algae growth. I am useing an over the counter product that is supposed to control algae growth but it seems to not be working. Does anyone have any suggestions?