I agree with option #1, but go to the LFS and buy several LARGE buckets of patience ;)

Don't know your feeding schedule, but if you can cut WAY back for 2-4 weeks, that will help reduce the growth of everything, including the Aptasia. Someone else mentioned flow, if your turnover is 10-15x or less, add a few powerheads during this period to keep things suspended in the water column and flowing into your filtration.

Let us know how it goes!