The uv will slow it's spread and prevent green water, several fish and snails eat it, cutting back on light duration also slows or kills it, but the best bet is lower phosphates and outcompete it for nutrients by adding more higher level aquarium plants. There are also several phosphate reducing chemicals available.
lol my cat almost has thumbs hahahahahahah and fingers oh he's a black&white polydactal lol he's the smartest cat ever lol maybe not but
i can teach him anything lol his fav game is fetch ya!!