I was looking at trying my hand at a Cherry Shrimp Colony and needed to get a sponge filter. Its a 10 Gallon tank with a Marineland 100 Series and I think the Hydro-Sponge I will do the trick. Am I using the proper sponge?
Ahh, my mistake. I'm not familiar with that specific HOB but I bought generic cylindrical sponges at my LFS and slid them on both my TopFin and Aqua Clear filter intakes. I've also read of people just sliding new pantyhose over the intake tube.
For Cherry Shrimp tank I use the small wall mounted (by two suction cups) Elite fry sponge filter by Hagen. I use one of those for each 5gals of water. I remove the "charcoal" media (that dark colored sponge), cut a small piece of seeded sponge from one of my filters in healthy tanks and place it in contact with the new sponge media.
It works great in terms of biological filtration, it does a fair to poor job as mechanical filtration.