An Upside-Down jellyfish lives on the sand bed – bell down and tentacles up. This unique orientation allows this photosynthetic jellyfish to capture light. It hosts symbiotic zooxanthellae algae within its tissues, which convert light into energy. By exposing its frilly tentacles to the light, it cultivates its own food source. The gentle, rhythmic pulsing of its bell is not only hypnotic to watch but also serves to circulate water, bringing in supplemental food.
The Upside-Down Jellyfish is unique because it is a photosynthetic animal, has a mesmerizing pulsing motion, and a unique “flower” appearance. It is perfect for low flow tanks and is best kept in species specific or lagoon style biotopes.
The Upside-Down Jellyfish has very specific requirements that differ from a typical reef aquarium. Success depends on providing a low-flow environment
Tank Requirements
Minimum Tank Size: 10 Gallons.
Flow: Low Flow is Essential. Use only gentle filtration (like a sponge filter or a baffled filter outlet).
Substrate: A soft, fine sand bed of at least 1-2 inches is mandatory. They will not thrive on bare-bottom or coarse gravel substrates.
Aquascape: An open, uncluttered sandbed is preferred.
Lighting & Feeding: While photosynthetic, they are not self-sufficient and must be fed to survive long-term.
Lighting: Moderate lighting is ideal. Provide lighting similar to what you would for soft corals (LPS/Softies PAR levels are a good target).
Diet: Planktonivore.
Recommended Foods: They require regular feeding with microscopic foods. Live baby brine shrimp, rotifers, and specialized liquid jellyfish food or coral plankton formulas are all excellent choices.
Feeding Method: Turn off all flow and gently target feed by releasing a cloud of food just above the jellyfish's tentacles. Feed at least 3-4 times per week.