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Everybody has certain unwanted species arrive. NOT everybody has them take off and become a pita.
An exception is caulerpa algae in your rockwork: THAT is a plague that can cost you all your rockwork if your tank is too small to accommodate one of the only species that will eat it (rabbit).

Hair algae is a piffle. Most everybody gets it. A tank that continues to have it past a few weeks has a lot of phosphate it shouldn't have. Instead of buying a critter alleged to eat it---get...

Often it's the things you CAN'T see that cause the fail...
The ones that sneakily do in your corals or make your fish susceptible to problems.
This is where you need a) a decent skimmer (2x your tank system volume is a good measure) to handle nitrate b) strong water flow---limp flow doesn't oxygenate enough: your fish should work a little holding place at some points. c) do your water changes to replace the micro-traces your fish/corals may use up....
In other words, its the...