🧽 Extra Small Sponge Filter – Perfect for Nano Tanks & Fry

🧽 Extra Small Sponge Filter – Perfect for Nano Tanks & Fry

Looking for a gentle, compact filter for your nano setup? This extra small sponge filter is the ideal solution for tanks under 5 gallons, betta bowls, shrimp tanks, and fry grow-out systems. It delivers quiet, mechanical and biological filtration without disturbing your aquascape or delicate livestock.

Designed for low-tech, natural aquariums, it pairs perfectly with any air pump and standard airline tubing — no electricity or fancy gadgets required. Just set it and forget it!

✅ Why Choose This Filter?

• ✔️ Compact size fits tanks as small as 1–5 gallons

• ✔️ Gentle airflow for fry, bettas, and shrimp

• ✔️ Dual-purpose mechanical & biological filtration

• ✔️ Easy to clean and re-use — no cartridges needed

• ✔️ Quiet operation when paired with a quality air pump

🧠 Father Fish Tip:

This filter is great for natural substrate tanks where soil and sand help establish beneficial bacteria. Let the sponge filter quietly polish the water while your ecosystem does the heavy lifting.