Aiptasia Removal: Comparing the Methods That Actually Work

Why aiptasia is uniquely frustrating

Aiptasia anemones reproduce both sexually and asexually (by fragmenting), and physically damaging one without killing the entire animal — including the base — often triggers it to multiply rather than die. This is why "just rip it out" frequently backfires.

Methods ranked by reliability

1. Chemical injection (kalkwasser paste, aiptasia-specific treatments) — injected directly into the polyp, this is the most reliable single-treatment method since it kills the whole organism including the base.
2. Peppermint shrimp (Lysmata wurdemanni) — a natural predator, genuinely effective in many tanks, but not every individual shrimp reliably eats aiptasia, and large or well-established infestations may overwhelm a small shrimp population.
3. Berghia nudibranchs — highly specialized aiptasia predators that eat almost nothing else, extremely effective for severe infestations but require aiptasia to be present continuously as their only food source, meaning they'll starve once the job is done unless rehomed.
4. Boiling water injection — a low-cost DIY method, reasonably effective but riskier to use precisely near coral without accidental thermal damage to neighbors.

Prevention matters more than any single cure

Most aiptasia infestations start from a single hitchhiker on new rock or coral — inspecting and dipping new additions before introducing them to your display catches the vast majority of infestations before they ever take hold.