A Soft, Glowing Jellyfish That Gently Floats in Your Tank
Couldn't load pickup availability
In stock - Ready to ship (Free Shipping)
243 items purchased in the last 24 hours
Bring a splash of color and motion to your aquarium.
This floating jellyfish ornament adds a gentle glow and smooth movement to any fish tank. It sways with the water current and creates a calm, dreamy look your fish will love. It works in both freshwater and saltwater tanks and is an easy way to brighten up your underwater world.
A simple decoration that makes your tank feel alive.
✔ Soft silicone body keeps fish safe
✔ Glows with built‑in fluorescent powder
✔ Moves naturally with your tank’s water flow
✔ Easy setup with invisible line and suction cup
✔ Fun colors to match any aquarium theme
Made from soft silicone with fluorescent powder. Diameter about 5 cm and total length about 15 cm. Rinse gently with clean water during regular tank maintenance.
We are proud to offer duty-free, reliable, tracked shipping— delivered to your door in over 200 countries worldwide!
Below you can check our average shipping times:
Domestic USA Shipping: 2-9 business days
US & Canada: 7-18 days
Europe: 7-18 days
Europe Plus*: 8-30 days
Australia, New Zealand: 7-18 days
Hong Kong, Singapore: 7-18 days
Rest of the world: 8-30 days
*does not include processing times up to 2 business days or longer in peak periods
Primarily we ship out from fulfillment centers in the United States, Eastern Asia and Western Europe. If the item you've purchased is out of inventory in your nearest location, we'll send it directly from our production lines at the same delivery times as stated in our shipping section.
Is this jellyfish safe for all fish?
Yes. It is made from soft, fish‑safe silicone that won’t harm curious swimmers.
Can I use it in freshwater and saltwater tanks?
Yes. It works well in both types of aquariums.
How do I install it?
Attach the suction cup to the tank wall and adjust the thin line until the jellyfish floats where you want.
The fluorescent powder adds soft color that stands out under aquarium lights.
It sways naturally with the water current for a calm, lifelike effect.
Soft silicone helps keep fins and scales protected.
The suction cup and invisible line make placement simple.
Bright colors bring a fun pop to any aquarium theme.
A simple upgrade that gives your tank more motion and color.
| Features | MK Aquarium | Knock-Offs |
|---|---|---|
| Safe for fish | ||
| Soft silicone body | ||
| Fluorescent glow | ||
| Natural swaying motion | ||
| Invisible line for clean look | ||
| Simple suction cup install | ||
| Multiple color options | ||
| Freshwater and saltwater friendly | ||
| Smooth rounded edges | ||
| Lightweight for gentle movement |
It has fluorescent powder that looks brightest under aquarium lighting but still shows soft color in regular light.
Yes. You can adjust the invisible line to place it higher or lower in the tank.
Just rinse it during your normal tank cleaning to keep it looking fresh.
When placed on a clean surface, the suction cup holds firmly and keeps the jellyfish in place.
Yes. Its soft silicone design is gentle and won’t bother shy swimmers.
Absolutely. Mixing colors creates a lively, glowing display.
No. It is made from stable materials that are safe for aquarium use.
It measures about 5 cm across and about 15 cm long when floating.
Yes. Stronger flow makes it sway more, while gentle flow gives it a slow, drifting motion.
