JELLY CYLINDERNANO – Fully Cycled Bio Sponge
Before Jellyfish can be added/ordered, you MUST properly “cycle” your aquarium. The cycling process is when a beneficial bacteria is fed an ammonia source. This bacteria then reproduces and colonizes in the sponge located in the back of your aquarium (this “cycle” process can take up to 6 weeks+).
SKIP THE CYCLE with the Fully Cycled Bio-Sponge!
Not shipping the sponge with Jellyfish? You MUST select FedEx 2 Day Express, standard or priority overnight in checkout when ordering the Fully Cycled Bio-Sponge.
HOW IT WORKS:
- Order or redeem your jellyfish while processing your aquarium setup.
| Feature | Detail |
|---|---|
| Product Type | Fully Cycled Bio Sponge |
| Usage | Pre-installed beneficial bacteria for aquarium cycling |
| Shipping Requirement | Must select FedEx 2 Day Express, standard, or priority overnight during checkout |
FAQ
How long does the cycling process take with the Fully Cycled Bio Sponge?
The cycling process is already complete with this sponge, so no additional time is needed for bacteria establishment.
Can I use this sponge with any type of aquarium?
Yes, this sponge is designed for use in standard freshwater aquariums with a compatible filter system.
Is the sponge pre-filled with beneficial bacteria?
Yes, the sponge is fully cycled and contains established beneficial bacteria ready for immediate use.


Virginia Lee –
I ordered the jellyfish and the bio sponge together. No waiting for cycling — the tank was ready to go in just a few days. The sponge worked perfectly and the water parameters stabilized quickly. Highly recommend for new aquarium owners.
Jack Mackenzie –
Saved me weeks of waiting. I was worried about the cycling process, but the sponge made it simple. Just added it to my filter and started the jellyfish right away. Water quality improved noticeably.
Fiona Nash –
Great product. The instructions were clear and the sponge arrived with the bacteria already active. My tank has been stable since I used it. No ammonia spikes, no stress for my fish.