Thanks for viewing our listing! We're aquatic professionals providing quality equipment that we would use ourselves! Decades of experience!

Items not pictured are custom made for your order!

For aquariums, ponds, irrigation, etc. 


Premium sponge filter ran from an air pump, power head water pump, HOB, Canister Filter, etc. For waste removal and biological support for aquarium/pond.


The correct sponges for the application and the parts required to not get clogged or drop waste back into the water. Adapters to fit most all applications! 


Note: fine filters tend to clog quickly on high flow water pumps. Consider the coarse option or making a combo of fine and coarse filter to make the right filter for your application. Make your own combos with easy part connections!

Highly biologicial. Highly bio-load

Both fine and coarse
Sponge Mini- 2.25" H x 2.75" W
Sponge #1- 2.25" H x 3.75" W
Sponge #2- 4.25" H x 2.75" W
Sponge #3- 4.25" H x 3.75" W
Sponge #4- 4.5" H x 4.5" 
Sponge #5- 4.5" H x 5.25" W

Made from Proprietary Patented Sponge Foam for the highest mechanical debris capacity and bio capacity; generally as much as FIVE TIMES THE CAPACITY of other non Patented Sponge Filters!!!

As well, patented reticulated filter foam (PRO) foam for higher flow rates. We also have the combo sponge filters that combines the best of both the standard & reticulated sponges.


Carrying a complete line of sponge filters what we would use and recommend. Also custom filter combos made by us for best use.


Some examples:

Hydro Sponge mini

Sponge Size; 2.25" H x 2.75" W (Recommended for 1/2 gal. up to 10 gal.)

  -Over all height 3" to 8" depending upon whether lift tube is used

  -Lift Tube, as with all Hydro Sponge Filters, can be removed or cut for small Betta Bowls



Hydro Sponge I

Sponge Size; 2.25" H x 3.75" W (Recommended for 2.5 gal. up to 15 gal.)



Hydro Sponge stackable

Great for adding on to your existing Hydro Sponge Filter (models 1 & 3) for breeding tanks (makes a great place to hide for fry between layers).

  -Multiple layers can be added.



Hydro Sponge  II

Sponge Size; 4.25" H x 2.75" W (Recommended for 10 gal. up to 30 gal.)



Hydro Sponge II pro

Sponge Size; 4.25" H x 2.75" W (Recommended for 10 gal. up to 30 gal.)


  -New high Flow reticulated sponge for higher bio loads that tend to clog regular sponge filters!

  -Please note that the size aquarium the 2 PRO best fits, generally does not call for the higher flow rate reticulated sponge nor should it have the higher bio loads of a larger aquarium, therefore, in most applications the Hydro Sponge 2 Regular is the correct choice



Hydro Sponge III

Sponge Size; 4.25" H x 3.75" W (Recommended for 15 gal. up to 40 gal.)



Hydro Sponge III pro

Sponge Size; 4.25" H x 3.75" W (Recommended for 15 gal. up to 40 gal.)

  -New high Flow reticulated sponge for higher bio loads that tend to clog regular sponge filters!

  -Please note that the size aquarium the 3 PRO best fits, generally does not call for the higher flow rate reticulated sponge nor should it have the higher bio loads of a larger aquarium, therefore, in most applications the Hydro Sponge 3 Regular is the correct choice



Hydro Sponge I / III pro combo

Our suggested Combo sponge filter for many high bio load applications.

Even in high bio load larger aquariums, multiple use of this Combo (over our #5) may be more desirable due to better filter redundancy & ease of hiding 2 or three of these #3/1 Combos over one more bulky #5 Combo.

This combo is also already put together for you out of the box, just connect air line tubing or other method to power!

Both this and the #5 Combo not only provide unequaled bio filtration, but these combine the best of both types of mechanical filtration, making these excellent mechanical filters too!!

  -Can be used with both air pumps and power heads.

We suggest the addition of an optional air diffuser connected to the upper bulls eye if used with an air pump

  -Sponge Size; 6.5" H x 3.75" W

  -This combo provides both fine and coarse mechanical filtration while still preserving higher water flow in medium sized aquariums.

  -Bio capacity rivals many HOB filters at a fraction of the price as well being a much more simple filter to use

  -Suggested Aquarium Size: UNDER 50 gallons



Hydro Sponge IV

Sponge Size; 4.5" H x 4.5" W (20 gal. up to 60 gal)

Please note that we do not offer the Hydro Sponge #4 PRO as our in depth professional experience has shown that most aquariums where this could be used, the #4 regular will be a better fit, then combined with either the #5 or #3 PRO Filters


Hydro Sponge V


Sponge Size; 4.5" H x 5.25" W (30 gal. up to 100 gal with flow rates up to 400 gph)

For even larger aquariums or large aquarium sumps with flow rates up to 700 gph, consider the Hydro Sponge #5 PRO Below



Hydro Sponge V stackable

Great for adding on to your existing Hydro Sponge Filter (model 5) for breeding tanks (makes a great place to hide for fry between layers).

  -Multiple layers can be added.



Hydro Sponge V pro

Sponge Size; 4.5" H x 5.25" W (Recommended for 40 gal. up to 125 gal)

  -New high Flow reticulated sponge for higher bio loads that tend to clog regular sponge filters!

  -Up to 125 gal. and flow rates up to 700 gph


For even larger aquariums (up to 200-250 gallons depending upon model) or large aquarium sumps with flow rates up to 1500 gph, consider the Hydro Pond Filters


Hydro Sponge V combo

Both this and the #3/1 Pro Combo not only provide unequaled bio filtration, but these combine the best of both types of mechanical filtration, making these excellent mechanical filters too!!

This combo is also already put together for you out of the box, just connect air line tubing or other method to power!

  -Can be used with both air pumps and power heads.

We suggest the addition of an optional air diffuser connected to the upper bulls eye if used with an air pump

  -This combo provides both fine and coarse mechanical filtration while still preserving higher water flow in larger aquariums.

  -Bio capacity rivals many larger canister filters at a fraction of the price as well being a much more simple filter to use

  -Suggested Aquarium Size: over 60 gallons

We also sell the Hydro Pond #2, which is similar to the #5 COMBO except that it is two reticulated PRO Sponges.

In most instances, we recommend the #5 COMBO over the Hydro Pond #2 for aquarium use due to its two stage mechanical and biological filtration (this is based on professional testing by AAP founder Carl Strohmeyer). However in some instances the use of two higher flow PRO sponges might be best.

Hydro Pond #2 Filter for Ponds or Large Aquarium


Available parts on separate listing and full service website.








The HydroSponge Filter provides both mechanical and biological filtration that generally excels over similar sized HOB Filters that generally are double the cost and much more expensive to keep!!!


Aerobic bacteria colonize the sponge providing a bacterial substrate to facilitate the nitrogen cycle.









AUTHORIZED ONLINE DISTRIBUTOR from AAP™ with 4 decades experience selling this product!

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