Aquarium Biochemical Filter Foam Sponge (15–50 PPI, Black, Cut-to-Size)

🐾 Product Overview

Aquarium biochemical filter foam sponge — 15 to 50 PPI, black, cut-to-size — this black aquarium biochemical filter foam sponge provides customizable mechanical and biological filtration media in multiple pore-per-inch densities from 15 PPI to 50 PPI, black coloring for aesthetic integration, and cut-to-size format for any filter configuration. PPI (pores per inch) determines the particle size a sponge captures — lower PPI (15-20) captures larger particles with higher flow-through and is used for coarse pre-filtration, while higher PPI (40-50) captures finer particles for polishing but restricts flow more and requires more frequent rinsing.

✨ Key Benefits

• 🔢 15–50 PPI — Multiple densities for coarse pre-filtration through fine polishing.
• ⚫ Black — Blends with dark tank backgrounds and equipment aesthetics.
• ✂️ Cut-to-Size — Custom trim for any filter basket or sump tray configuration.
• 🦠 Bio Media — Porous structure supports beneficial bacteria colonization.
• 🔄 Reusable — Rinse in tank water and reuse for extended service life.

📦 What's Included

• 1x Aquarium biochemical filter foam sponge (PPI per selection)

📏 Specifications

• PPI Range: 15, 20, 30, 40, 50 PPI
• Color: Black
• Feature: Cut-to-size, reusable, biochemical filtration
• Best for: DIY filter builds, sump filtration, canister filter media, custom filter setups

💖 Why You'll Love It

Multi-density filter foam allows filter builders to create proper mechanical filtration staging — coarse foam captures the bulk of suspended particles while protecting finer media downstream from rapid clogging, and fine polishing foam provides the final particle removal that delivers crystal-clear water. Using the correct PPI for each filtration stage is more effective than using a single density throughout because each stage can be optimized independently — coarse pre-filter foam is rinsed frequently without concern about disrupting bacterial colonies, while the fine polishing foam downstream accumulates only the particles that passed through pre-filtration. Black coloring provides the practical benefit of making the foam less visible through transparent filter housings and against the dark backgrounds common in display aquariums.

🛒 Order Yours Today

Aquarium biochemical filter foam sponge — 15 to 50 PPI, black, cut-to-size. Order today! 🐾