Your CUC is for a different type of algae. Hermits like brown algae. Coral banded shrimp eats leftover food, not algae that I know of. Peppermint shrimp eat aiptasia and leftover food that gets caught in the rocks.
For hair algae you need a lawnmower blenny, or a pigmy angelfish. A sea hare will mow it down then starve when it’s all gone. The blenny and angelfish can eat other foods once the algae is under control.
Also you most likely have phosphates, are overfeeding or using tap water. One or all of these mentioned will cause hair algae blooms. Address the problem and with regular water changes the HA should go away on it’s own.