staghorn

I have a stingray LED light on 6 hours a day and dose "easy green" liquid fertilizer 1-2x a week. This hairy, fuzzy black algae loves my jungle vall and moneywort, but also affects other plants. What is it and how do I get rid of it?

I think I've identified this fuzz as staghorn algae...?   It's usually white but turned hot pink the other day?!   I tried all day yesterday to post this but couldn't for some reason.   I went home and cut all of my anacharis down to stubs (some of the tips had it growing on it).   And I boiled...