Hydro Sponge Filters


Sponge filters provide efficient biological filtration

ATI Hydro Sponge Filters

Hydro-Sponge filter provides both mechanical and biological filtration. Aerobic bacteria colonize the sponge providing a bacterial substance to facilitate the nitrogen cycle. In addition, the Hydro-Sponge traps larger waste particles mechanically cleaning the water without trapping the baby fish.
This is a complete sponge filter with: sponge, base, strainers and uplift tube. You will need to add airline tubing and an air pump.


  • Capable of moving more water than other sponge filters.
  • One inch diameter lift tube allows use of power head* without adapters.
  • Raised off bottom, no dead space.
  • Heavier base.
  • Can be used with or without an airstone.*
  • Easy to clean. Just rise and squeeze under cool running water.
  • *powerhead and airstones are not included


Description Sponge Size Tank Size Surface Area (inches)
Hydro I 2 x 3-3/4 >10 gallons 46.1
Hydro II 4 x 3-3/4 >20 gallons 48.4
Hydro III 4 x 3-3/4 >40 gallons 74.4
Hydro IV 4 x 4-3/4 >80 gallons 104.7
 Hydro V 4 x 5-3/4 <125 gallons 138.4

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