Pre-seeded Sponge

[FishBearer9845]

Hello
I'm looking please, for a preseeded, old used sponge someone is willing to sell and send me please (I'm guessing it will need to be in water from the same tank?)
I've phoned all my local aquatic stores and they all run on gravel systems and I've had no luck requesting on the local facebook selling pages.
Please someone help!
Edit: I'm UK based in Suffolk

 

[Byron]

I would point out that this is highly dangerous. Never use sponges, filter media, substrate, wood, etc from another aquarist's aquarium. You've no idea what pathogens might be present to infect your aquarium. Similarly, never use such items from stores. If we quarantine new fish, this is no different.

If you are looking for bacteria seeding, one of the bacterial supplements will do this. Tetra's SafeStart is probably the best if fish are present. Dr. Tim's One and Only is another. But even one like Seachem's Stability will help.