Hair algea how to get rid ???

[fishguyxd]

I have it and this stuff grows fast as some of your know ,I myself have never had it before. So now How do I get rid of it? The water parameters this last last test were all in the normal range. The tank is 4 yrs old. At this point there not alot of livestock only a couple snails one the algea has grown on him so he a fuzzy snail and couple crabs (safe type) and only some small corals (mushroom and frogspawn).this hair stuff grows in patches but seems to get around alot. So what?? water changes, more skimming, lighting adjusting any additives what??
thxs
AL