Thank you for your interest. If you could please email us directly, we’ll make sure your request is forwarded to the appropriate team member. At Hydra Aquatics, we do not use or recommend the use of coarse sponge materials, as seen in some competing brands. Coarse sponges offer significantly less surface area for beneficial bacteria, fail to effectively trap fine particles, and often release debris back into the aquarium during removal and cleaning. Some brands even suggest using a bag to catch the sponge during maintenance—an unnecessary complication. Hydra Aquatics was among the first to introduce this style of sponge filter and continues to set the standard for quality and performance. Our designs avoid the common pitfalls associated with inferior materials and provide superior biological and mechanical filtration. We’re also pleased to share that directional outlet attachments are now in stock for all Hydra Aquatics sponge filter models—offering even greater flow control and customization.
