I'm gonna sum it up for you guy. , nudi's take a long time and need to battle in numbers to take down aiptasia so you need to breed as they are expensive.... Then they starve because they only eat aiptasia.
Filefish works well and very fast but are not reef safe and mine eats zoa's and lps and is eating them pretty good so you may want to weigh the pros and cons.
Peppermint shrimp work very well but you need to feed very little as they are known to eat alot o food that isn't aiptasia, so starving them or puttin them in yoursump with just aiptasia rocks works well.
Copperband are absolutely not reefsafe and 99% of hem die in our tanks as we dont really know what they requie to stay alive, very few have longterm succss
lemon juice is my preferrd method but like joes juice and Kalk you can't get them all withou tearing up your tank.
Aiptasi spreads really fast and they are twice the pest then they are beneficial, the will KILL coral and just about all coral their sting is very very strong.
Sooooo if your played with 300heads like I was the filefish was my best choice in a 33g , I've been breeding nudis but i can't wait foe months.... Peppermints are great if you get a bunch and limit their food. I use lemon juice and I may have to Stab some twice but they say gone.
There's a thread on here about methods of removing aiptasia I suggest everyone read before buying anything as evryy system will use dif methods, aipasia can and will take over your tank Tust me an. If it does your in for alon of work.....trust me I've been battling aiptasia in tanks of all sizes with as many as a 1000 heads......IMO if left untouched you will lose alotnof coral.
Goodluck you guys