I used the Tailored Aquatics stuff works great. You might have to do it a few times to get them all.

I have some that stuff on order from OA for the 90 gallon tank, but with the amount of Aiptasia in the 46, I would need a gallon of it!

Maybe you should try a pair of peppermint shrimp from Red Coral. It took care of my aiptasia problem in about 3 weeks time. Now I don't even see a trace of them anymore.

Another vote for the Peppermint shrimp. If one doesn't work, try another, or another one. They are relatively inexpensive, and if you don't want them after they've finished with the aiptasia, they're usally easy to catch at night with some bait.

Maybe you could find a local friend with a raccoon butterfly fish and see if you can borrow it for a bit. I'd say purchase one, but don't know your future tank plans and 46 is a bit small for a perminant home for one in my opinion.

+1 for the tailored aquatics stuff..1 dose on each and no more have appeared....

Aptasia
 

Copper band butterfly. They eat a ton ,but pick at the rock all day.

+2
i know its hit or miss but for $9.99 its way better solution.
the only thing is they will not eat large apteisia.
If you consider cooking the rocks may as well dry em for a month or two and then re-sycle the tank.

jmo

How larger is a large aiptasia?

The hit and miss with Peppermint Shrimp and aiptasia seems can be partly attributed to mis-identification.

The true Peppermint L. wurdemanni (which eats aiptasia) is quite similar in looks to L. rathbunae (which doesn't always develop a taste).

Though I've allowed (by neglect) the aiptasia to come back, I managed them before by the ones I could reach with Kalk paste (made with mysis juice) and with Peppermint shrimp the ones I couldn't. For some reason shrimp (Peppermint or Cleaners) don't seem to last in my tank more than a couple of month.

Here's one article on the two species.
http://www.reefs.org/library/article..._redfield.html