PetWorx Aquarium Sponge Filter 3.5cm

The PetWorx Aquarium Sponge Filter 3.5cm is the perfect low-flow filtration solution for nano aquariums, fry tanks, shrimp setups and betta tanks. Designed to provide gentle mechanical and biological filtration, this compact sponge filter helps maintain crystal clear water while protecting delicate fish and shrimp from strong currents.

The fine sponge structure traps debris and uneaten food, while also creating a large surface area for beneficial bacteria to grow — naturally breaking down harmful ammonia and nitrites to keep your aquarium healthy and stable.

Key Features:

• Compact 3.5cm size – ideal for nano tanks and small aquariums

• Gentle, fish-safe filtration – perfect for shrimp, fry and bettas

• Supports beneficial bacteria growth for strong biological filtration

• Air-driven operation – quiet, energy-efficient and reliable

• Easy to clean & maintain – simply rinse in tank water to preserve bacteria

Designed to be used with an air pump (sold separately), the PetWorx 3.5cm Sponge Filter is a simple, affordable and highly effective way to maintain water quality in small freshwater aquariums.

A must-have filtration solution for breeders, shrimp keepers and nano tank enthusiasts.