Possibly starting first ever small FOWLR SW tank and looking for info

[Lampshade]

I just inject mine with lime juice out of the firidge. They never come back, they'll spread plague like if you have high nutriants in your tank. I use a needle i had for acrylic glueing, but any syringe would work, i inject lime juice into the mouth, untill they balloon up. I've noticed that if i stab them multiple times and inject it does not work, since the lime juice just spreads out.