Here is A Very Inefficient Method of Treating Aiptaisa I discovered a few weeks ago on accident… for anyone who is curious:
1. Submerge infested rock within sand
2. Wait for Aiptasia to detach from submerged rock and crawl towards the surface of the sandbed
3. Scoop up the Aiptasia
As this would stress out the Aiptasia as well as most other organisms on the rock (both beneficial and non-beneficial) and require a pretty deep sandbed, I would not recommend you attempt this method.
1. Submerge infested rock within sand
2. Wait for Aiptasia to detach from submerged rock and crawl towards the surface of the sandbed
3. Scoop up the Aiptasia
As this would stress out the Aiptasia as well as most other organisms on the rock (both beneficial and non-beneficial) and require a pretty deep sandbed, I would not recommend you attempt this method.