I tried to get most of my 10gal aquarium setup secondhand, but I got a new LED hood with a day/night light feature. I have since caved to peer pressure and put a couple live plants in there, but while my Anubias Glabra has been putting out a new leaf on occasion, the older leaves have been getting black spots.

I'm not sure if the "night" light is just a blue light, or if it's a blacklight and I've been torching my bebe plant with excess UV beams for 12-14 hours a day.