Ive been dealing with aiptasia for months on end, I'd say around 7 months. I first used the Red Sea aiptasia x, as I was advised to do so by my local fish shop (who coincidentally introduced this into my tanks!) it didn't work, they all spread, they got huge, they reproduced and now that entire 20 gallon is taken over by aiptasia. Since then I have tried nudibranchs, they got eaten by bristle worms (that also were introduced via my local fish shops corals which I dip every time so im very unsure of how all of this happened in the first place) f aiptasia, about 20 peppermint shrimp over time because they kept getting eaten, boiling water, and about twice a week now for a month ive been going in with kalkwasser paste and injecting them with it, to no avail. Now my 13.5 gallon is also covered in aiptasia. I call aquarium maintenance places to see if they can help, they tell me to get peppermint shrimp, nudibranchs, copper banded butterflies, or file fish to eat them. I explain I have done nudibranchs and peppermints and that I have nano tanks so no copper bands or filefish can go in them, and then they say there is nothing they can do for me. I am losing all my hope, this is seriously messing with my mental as I truly do value my fish tanks. However im seeing no end in sight to this mess. I cant keep dealing with this it feels like insanity.