i got a store full of aiptasia in my 120g. here's what I've tried and my comments on success/failure... and not to step on Eianna's toes, but some questions too:
my tank is in-wall so some places are tough to get to. also, i'm still growing out my acros (this is a 100% acro build i'm 5 months into), so just live rock and a pretty heavy fish stock at this point.
1) Kalk Paste: i mix the paste to a heavy consistency and dose with a syringe mated to a long tube wand and a needle applicator. This does a pretty good job, it is a routine weekly/bi-weekly effort. the advantage of the kalk paste is you don't have to be terribly precise and you can 'blanket the area'. not a final fix but a decent means of control. somewhat of a PITA and over time kalk aint cheap.
2) Aiptaser: i've posted on this before. cool product (in theory) but I blew through three of them due to failed power supply, faulty construction on the metal tips etc. this was an alternative to mixing kalk but after my 3rd unit to fail and $125 price point I opted to stop buying them. the manufacturer/distributer did replace them under warranty, but again, it never worked well. they'd fizzle then multiply
3) 3W 495nm Laser: this is a $350 item. you can stay dry. need to be careful and safe with its use. I am moderately happy with this but it is not a complete fix. due to my setup certain buggers are tough to get and you need a fairly 'direct line of site' to be effective with the laser. this is not a final fix either...i've seen some come back and frankly the 'snap crackly pop' that you see in certain videos only happens on the smallest of aiptasia. the larger ones (1.5") are much more resilient. on a scale of 1:5, 5 being extremely pleased, i'll give it a 4. again, not a final fix
4) Copper Band: tough fish, tried one and she didn't make it, i've got high flow and she was not happy. power blue and powder brown were not the friendliest but i think collection practices and finicky eating is a detriment. if you can find one in a LFS that has been eating for 2 weeks, buy it. pretty fish and i'm hoping to have one long term.
5) I have not yet tried Peppermint shrimp, lettuce nudi, or file fish. and my questions... here, what are the contaminant risks of nudi death? peppermint- they will crush my acro's right? file fish -- my lfs is experimenting with one to see if she'll eat aiptasia...if so i'll get her.
Thanks and again sorry to jump on your post bro.
-Greg