Lots of good advice coming in!
Remember you're the #1 member of your CUC.
They eat nubbins, so if there's anything growing that you'd really call "hairy" you'll have to pull it/scrub it by hand down to their level.
As you can imagine, it's a pain if you let it get out of control, so even if it's a small spot –
take care of it.
And once you do, you
really want to have a number and mix of CUC adequate to back up your efforts....if the nubbins you create have a whole day to grow out before grazer comes through, for example, it may already be too long for them.
It's going to be impossible to pull the hair coming out of holes in the rock... What can I get that will eat the hair?
Turn everything off and siphon it out. There are ways to do that without doing a water change if you want.
Zip tie your scraper to the end of the siphon hose and run the siphon into filter sock in the sump, for example.
You want to
leave the tank critters alone to mature as much as possible.
But the skimmer should be the only "add-on" you need for now. The rest can go...might be useful someday later.