agreed on the general ID
that's a good test assessment for invasive ability. you ought to hit a test area with peroxide outside the tank and watch how fast it dies
it grows back due to holdfasts being left in place anchored...like mowing a lawn. if you doused tech M right on the algae outside the tank during one of these cleanings, that would amplify work done and kill the holdfasts, cause a different outcome regarding growback. consider just a chem booster step if being fixed by Friday sounds appealing...if not, myriad alts exist to fix you by X date unknown
this is among obligate hitchikers. its prevention is only quarantine, no other way. you can either starve it out or kill it out, and when that DNA is gone, it can't come back till brought in again...this frames a nice attack angle for your tank.
contrast that to cyano...globe traveler, distribution everywhere...constant battles might occur and not able to be prevented by QT
there are grazers that will take care of your issue if experimenting with that while mass builds is chosen. a natural mode would be least work to fix for sure
