I've inherited my dad's koi pond. Lightning struck and took out the UV light, power source for it, 9 large koi, and the pump. This was 2 summers ago. I have replaced the pump, but I don't know how to do the UV light its power source. The power source's cord is blown to bits, and I can't get the part that plugs into the lamp off the cap-looking thing. Can anyone walk me through what I need and how to switch it? My pond is looking neon green at this point from the algae!