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O18 Pet Jellyfish Tank

Stunning, Low-Maintenance Pet Jellyfish Aquarium

Bring the hypnotic beauty of the ocean into your home or office with our premium jellyfish tank — the ultimate pet jellyfish aquarium designed specifically for thriving moon jellyfish. This elegant 5.2-gallon acrylic moon jellyfish tank combines effortless maintenance with breathtaking visuals, making it ideal for beginners, families, and jellyfish enthusiasts searching for a high-quality jellyfish aquarium or pet jellyfish aquarium.

 

Original price was: $529.00.Current price is: $379.00.

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Why Moon Jellyfish Make Incredible Pets

 

Moon jellyfish (Aurelia aurita) are one of the most popular and rewarding species for home aquariums. Their translucent bells and distinctive four horseshoe-shaped gonads create a mesmerizing, almost alien-like display as they gracefully pulse through the water.

– Stress-Relieving & Wellness Benefits: Watching moon jellyfish glide gently is proven to calm the mind, slow breathing, lower blood pressure, and reduce stress — like a living lava lamp that promotes relaxation and mindfulness in any space.
– Beginner-Friendly & Hardy: Easier to care for than most jellyfish species, moon jellies are relatively hardy, adaptable, and can live2–4 years (or longer) in a well-maintained tank — far exceeding the short lifespan myth.
– Safe & Gentle: They have very mild (often negligible) stings that are harmless to humans, making them perfect for households with kids or curious observers.
– Educational Wonder: Excellent for sparking curiosity in marine biology, perfect for classrooms, offices, or family learning experiences.

 Why This Jellyfish Aquarium Stands Out

– Effortless Placement: Compact and versatile, this pet jellyfish tank fits beautifully on desks, shelves, or consoles — anywhere in your home or office.
– Breathtaking RGB Lighting: Built-in color-changing LEDs with remote control let you create stunning underwater light shows. Highlight your moon jellyfish’s natural beauty with vibrant colors, soft glows, or natural ocean rhythms.
– Chiller-Ready: External connectors allow easy addition of a chiller for precise temperature control, keeping your moon jellyfish happy and healthy.

 Advanced Inbuilt Filtration System

Specially engineered for jellyfish tanks and moon jellyfish, the innovative circular flow design keeps your delicate pets safely away from intakes while delivering gentle currents they love.

Water circulates through a discreet outer-circle filtration chamber:
1. Sponge mechanical filter removes uneaten food and debris.
2. Porous ceramic bio media supports beneficial bacteria to break down toxins.
3. Adjustable pump returns crystal-clear, oxygenated water.

Enjoy pristine water quality with minimal effort — no daily maintenance hassles, just a thriving pet jellyfish aquarium that stays beautiful day after day.

Key Specifications

– Volume: 4.7 gallons or 18l jellyfish aquarium (perfect for 3–6 moon jellyfish, Cannonball, Blubber, or Fried Egg)
– Material: Premium crystal-clear acrylic
– Dimensions: 15 inches diameter × 8 inches depth
– Lighting: Integrated RGB color-changing LEDs with full remote control
– Filtration: Built-in mechanical + biological filter system
– External Connection: Yes — ready for chiller installation
– Power Consumption: Ultra-efficient ~15W

Ready to experience the magic? This jellyfish aquarium is the ideal moon jellyfish tank — blending smart engineering, stunning design, and simple care for a captivating living display.

Elevate your space with a slice of the ocean. Add this premium pet jellyfish aquarium today and enjoy the graceful dance of moon jellyfish in your home!

Preparing Your 18 Liter Jellyfish Tank: A Complete Setup Guide

Setting up an 18 Liter jellyfish tank (also known as the 18L jellyfish aquarium or Orbit 18 jellyfish tank) is an exciting way to bring the mesmerizing movement of jellyfish into your home. These compact, kreisel-style aquariums are designed for gentle circular flow that keeps delicate jellyfish suspended safely. Proper preparation is essential for success, as jellyfish are highly sensitive to water quality.

Step 1: Gather Supplies and Choose Location Place your 18l jellyfish aquarium on a stable, level surface away from direct sunlight and heat sources. You’ll need reverse osmosis (RO) or distilled water, high-quality marine salt mix (like Instant Ocean), a hydrometer or refractometer, test kits for ammonia, nitrite, nitrate, and pH, plus a thermometer.

Step 2: Mix and Cycle the Saltwater Fill the 18 Liter jellyfish tank with RO/distilled water. Add marine salt gradually while stirring—aim for a salinity of 30-33 ppt (specific gravity 1.023-1.025). Turn on the pump and let it run to dissolve the salt fully. Allow the water to reach room temperature (ideally 65-74°F / 18-23°C) and aerate for 24 hours. Test parameters: pH should be 8.0-8.1, ammonia and nitrite at 0 ppm.

For best results, cycle the Orbit 18 jellyfish tank for 1-2 weeks (or longer) to establish beneficial bacteria. This nitrogen cycle prevents toxic buildup once jellyfish are added. Perform small water changes with pre-mixed, matched-temperature saltwater during cycling.

Step 3: Final Checks Before Adding Jellyfish Verify stable temperature, salinity, and zero ammonia/nitrite. The gentle flow in the Orbit 18 design protects jellies from strong currents. Acclimate new jellyfish slowly by floating their bag and gradually mixing tank water.

Regular maintenance—10-20% weekly water changes, feeding brine shrimp or specialized jelly food, and monitoring parameters—will keep your 18 Liter jellyfish aquarium thriving.

For more educational resources on preparing the perfect saltwater environment, check out this excellent free guide from our friends at Squishy Tanks Jellyfish Aquariums (a separate company specializing in premium jellyfish systems and classroom materials): H2O Lab Quiz & Lesson Guide. Their teacher-friendly materials make learning about jellyfish care fun and accessible for everyone.

1 review for O18 Pet Jellyfish Tank

  1. Rated 5 out of 5

    Rhett Drissel

    Excellent 18L Jellyfish Tank – Finally the Real Deal
    I was holding off on this tank due to the other prices I saw online. Other websites say they have the O18 or 18L Jellyfish Tank but the pictures are of different tanks — smaller ones that clearly aren’t the same model. Nothing added up until I came here to jellyfishtank.net. The photos, dimensions, and details were accurate and transparent, which gave me confidence to move forward.
    I was able to meet the owner and pick up the 18 Liter jellyfish tank in person, which was a huge plus. The tank arrived (or rather, I carried it home) in perfect condition with careful packaging. Right out of the box, the quality is obvious — thick, crystal-clear acrylic, smooth edges, and a well-designed kreisel (circular flow) system that looks built to last.
    Setup was straightforward. The Orbit 18 jellyfish tank (also called the 18L jellyfish aquarium) creates that perfect gentle circular current jellyfish need. No dead spots, and the flow is adjustable so my moon jellies stay happily suspended without being tossed around. Temperature stability is excellent, and the compact footprint fits nicely on my desk while still giving the jellyfish plenty of room to move.
    After a proper saltwater cycle and acclimation, my jellyfish have been thriving for weeks now. The water clarity stays impressive with regular maintenance, and the whole system feels premium compared to cheaper alternatives I almost bought.
    If you’re serious about keeping jellyfish and want a properly sized, well-made 18 Liter jellyfish tank without the guesswork or misleading listings elsewhere, this is the one. Great product, honest seller, and real customer support. Highly recommended!

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