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  • Berghia Nudibranch - Aiptasia Destroyers - Reef Genetics

    Berghia Nudibranch - Aiptasia Destroyers - Reef Genetics

    Berghia Nudibranch - Aiptasia Destroyers - Reef Genetics

    $20.99
    Sale price  $20.99 Regular price  $29.99

Answers

Berghia Nudibranch FAQ: Aiptasia Control & Care

Are Berghia nudibranchs reef safe, and what do they eat?

Yes. Berghia nudibranchs (Aeolidiella stephanieae) are obligate Aiptasia predators. They eat Aiptasia anemones and do not eat coral, algae, prepared foods, or Majano anemones. Because Aiptasia is their only food source, plan to rehome surviving Berghia after the infestation is gone.

How many Berghia nudibranchs do I need?

Quantity depends on tank volume, infestation severity, rockwork, predators, and Berghia size. For standard Berghia, start around 2–3 in a 10–30 gallon tank, 4–6 in a 40–75 gallon tank, or 8–12 in a 100+ gallon tank, increasing the group for heavy infestations. Follow the product-specific recommendation for standard or XL animals.

How long does it take Berghia nudibranchs to eliminate Aiptasia?

Most aquariums need several weeks to a few months. Berghia are nocturnal and work gradually, so you may not see them during the day. The timeline depends on tank size, infestation level, group size, rockwork, and predators; Aiptasia reduction can accelerate after the Berghia settle in and reproduce.

How should I acclimate and add Berghia to my reef tank?

Follow the acclimation instructions supplied with your order, matching temperature and adjusting gradually to the aquarium’s salinity. Introduce Berghia after lights out, pause strong pumps long enough for them to attach, and place them gently on rockwork near Aiptasia. Avoid open-water release, strong flow, and unnecessary handling.

What fish and invertebrates may eat Berghia nudibranchs?

Wrasses, dottybacks, filefish, butterflyfish, puffers, triggers, and some carnivorous shrimp may eat Berghia or their eggs. Pumps and overflows can also pose a risk. Add Berghia at night near protected rockwork and reduce predator and intake hazards whenever possible.

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More info and buying tips

Buy Aquacultured Berghia Nudibranchs for Natural Aiptasia Control

Looking for Berghia nudibranchs for sale to control an Aiptasia outbreak? Top Shelf Aquatics offers aquacultured Berghia nudibranchs (Aeolidiella stephanieae), specialist marine slugs that hunt Aiptasia without grazing on coral. They are a targeted biological option for reef keepers who want to avoid treating every pest anemone individually or adding a fish that may nip at coral.

Berghia work gradually rather than delivering an overnight fix. After introduction, they move through rockwork at night, locate Aiptasia in exposed and hard-to-reach areas, and can reproduce while enough food remains. That makes them especially useful for established infestations scattered throughout a reef aquarium.

Why Berghia Are Effective Aiptasia-Eating Nudibranchs

Berghia are obligate Aiptasia predators: their diet consists of Aiptasia anemones. They do not eat coral, algae, prepared aquarium foods, or Majano anemones. Because they target the pest instead of the surrounding reef, aquacultured Berghia offer a focused approach to Aiptasia control.

  • Reef-safe around corals and desirable reef inhabitants because Berghia do not prey on them.
  • Nocturnal hunters that can reach Aiptasia tucked into pores, crevices, and shaded rockwork.
  • Suitable for small and large reef systems when stocked for tank size and infestation level.
  • Able to lay egg spirals and build a working population while Aiptasia remains available.

How Many Berghia Nudibranchs Do You Need?

The right quantity depends on aquarium volume, infestation severity, rockwork, predators, and the size of the Berghia offered. For standard-size Berghia, use these practical starting ranges:

  • 10–30 gallons: 2–3 for a light infestation or 4 or more for a moderate infestation.
  • 40–75 gallons: 4–6 for a moderate infestation or 8 or more for a heavy infestation.
  • 100 gallons and larger: 8–12 for a widespread infestation, with more for severe cases.

These ranges are guidance rather than a guaranteed treatment formula. Larger groups usually find one another and establish faster, while heavy infestations and complex aquascapes may require additional animals. Standard and XL options can have different stocking recommendations, so follow the guidance on the product selected.

How Long Does Aiptasia Control Take?

Expect Berghia nudibranchs to reduce Aiptasia over several weeks to a few months, not overnight. Results depend on infestation size, tank volume, Berghia quantity, predator pressure, and whether the animals can move safely through the aquascape. They are small and nocturnal, so it is normal not to see them during the day. Aiptasia reduction may become more noticeable after the Berghia settle in and begin reproducing.

Berghia Nudibranch Care and Acclimation

Berghia care is straightforward once the aquarium is stable and contains enough Aiptasia, but these sea slugs are delicate during transfer. Follow the acclimation instructions supplied with the order and avoid sudden changes in temperature or salinity.

  • Maintain stable reef conditions around 74–78°F and a specific gravity of 1.024–1.026.
  • Provide rockwork with low- to moderate-flow areas where Berghia can grip and hunt.
  • Introduce Berghia after lights out and temporarily pause strong circulation while they attach.
  • Place them gently on rock near Aiptasia rather than releasing them into open water.
  • Protect pump and overflow intakes where possible, and avoid unnecessary handling.

Tank Mates and Predators

Wrasses, dottybacks, filefish, butterflyfish, puffers, triggers, and some carnivorous shrimp may eat Berghia nudibranchs or their eggs. Predator pressure can make a properly stocked group seem ineffective. Introduce Berghia at night, place them directly on rockwork, and reduce known predator risks whenever possible.

What Happens When the Aiptasia Is Gone?

Once Aiptasia is eliminated, Berghia cannot switch to another food. Plan to move surviving nudibranchs to another Aiptasia-infested aquarium or rehome them with another reef keeper. This specialized diet is what makes Berghia so reef-safe, but it also means they are a purpose-specific biological control rather than a permanent cleanup-crew animal.

Shop Standard and XL Berghia Nudibranchs

Compare the available standard and XL Berghia nudibranch options in this collection, then choose a pack and quantity that match your aquarium size and Aiptasia infestation. Starting with an appropriately sized group gives these Aiptasia-eating nudibranchs the best opportunity to settle, find food, and work throughout the reef.