Penn-Plax Optimizer Pre Fish Filter

Pre-filter filters large debris and particles before they reach your canister filter. Designed for large or dirty fish tanks that easily clog typical canister filters. Extends the life and efficiency of any canister filter, while offering an additional stage of filtration. Includes 1 coarse and 1 fine sponge to optimize the colonization of anaerobic bacteria. Has a flow-control handle for additional customization, and the 2 360-degree, independent valve taps fully rotate.