Is this a problem algae?

yes agreed
so glad it wasn't tank wide w be easy

agree spray w new bottle of 3% or lightly diluted w be dead in 20 hours

anything that regrows was from holdfasts so hit it a couple but watch one treatment probably do it lol invasive macros are a wimp. If this is bryopsis we w know by the regrowth this w be fun after pics though
 

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

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    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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