What is a protein skimmer?

I added
2 gogorians
A Zoanthid
A hammer
A green star
Frogspawn
2 birdsnest
A lepto
A cabbage leather
A duncan
A Candy cane
A trumpet

from those corals do you think I need a protein skimmer?
I got nearly all acros with high “nutrients”, I ain’t got one. I had a softy tank with a skimmer that didn’t do a lot, apart from aeration.
 
This is my tank without a protein skimmer. I have green star, hammer, frogspawn, candy cane, palys, leathers, gorgs, BTA, bird's-nest and even a lepto. My tank does have macroalgae for nutrient uptake. The macros take up dissolved organics the same as a skimmer and I like the looks of them.
IMG_20230402_164456435.jpg
How big is it?
 
How big is it?
My tank is a 56 gallon column tank. It does have a 30 gallon basement sump and I have a very easy, effective water change station to keep nutrients in control when the macroalgae is not enough by itself.
 

IF YOU HAD TO TAKE A REEFING EXAM, WOULD YOU PASS?

  • Yes!

    Votes: 32 45.7%
  • Not yet, but I have one that I want to buy in mind!

    Votes: 9 12.9%
  • No.

    Votes: 26 37.1%
  • Other (please explain).

    Votes: 3 4.3%
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