Hikari Bacto-Surge Sponge Filter Kit – Small
The Hikari Bacto-Surge Sponge Filter Kit provides unmatched biological and mechanical filtration and is well suited for delicate fry tanks, breeding tanks, quarantine applications, nano betta tanks as well as for sensitive, slow-moving fish such as colourful & exotic discus. The high-quality, porous sponge offers a sizable surface area with thousands of microscopic pores that encourage the growth and colonization of beneficial aerobic bacteria.
Versatile and reliable, the unit can be used as a polishing filter for canister filter applications, in combination with hang-on filters or be used as uplift tubes on under gravel filters. The durable sponge filter is composed of long-lasting polyether foam with an uplift tube and air diffuser comb.
| Specification | Detail |
|---|---|
| Filter Type | Sponge Filter |
| Material | Polyether Foam |
| Application | Fry Tanks, Breeding Tanks, Quarantine, Nano Betta Tanks, Discus Tanks |
| Filter Function | Biological & Mechanical Filtration |
| Includes | Sponge, Uplift Tube, Air Diffuser Comb |
FAQ
Can this filter be used in a nano betta tank?
Yes, the Hikari Bacto-Surge Sponge Filter Kit is well suited for nano betta tanks due to its gentle filtration and small size.
Is the sponge reusable and long-lasting?
Yes, the sponge is made of durable polyether foam and is designed to last with proper maintenance.
Can it be used with a canister filter?
Yes, it can be used as a polishing filter in canister filter setups.

Emily Martin –
I used this filter in my 2.5-gallon nano betta tank and it has been working well for two months. The water clarity improved noticeably and my betta seems more active. The sponge is easy to clean and doesn’t clog easily.
Kimberly Walsh –
Great for a breeding tank. The filter handles the small fish gently and maintains good water quality. I use it as a polishing filter with my canister system and it helps with the final water flow.
Diane Berry –
The uplift tube and diffuser work well in my discus tank. The sponge stays clean and the bacteria colonies are thriving. It’s a reliable and quiet filter for sensitive fish.