SPONGE FILTERS; Myths and Truths;

The use of an Aquarium or even Pond Sponge Filter is a proven and yet economical way to maintain effective aerobic biological filtration.

A Sponge Filter IS PROVEN useful for these applications:
*Main Filter, *Secondary Filter, *Pre-filter, *Sump or Central Filter System in Fresh or Marine Aquariums (the Hydro Pond Sponge works great for this), *Hospital Filter, *Bowl or Small Tank Filter.
(For more please read the posts below)


For a full article about how "The Best" Sponge Filters work, please visit this site:
"Sponge Filtration; How Sponge Filters work in Aquariums and Ponds"

This article is a MUST read as these filters Surpass most other filters in aerobic Bio Filtration; HydroPond & HydroSponge #5 PRO Sponge Filters even surpass many over hyped Canister Filters (only Fluidized Bed Filters out perform Sponge Filters for aerobic bio filtration)!
Please Scroll down for "Sponge Filter Article" posts/articles which follow this header section

To purchase the best in Sponge Filters at the lowest total prices
(when shipping is factored in):
Sponge Filters

Premium Patented ATI Hydro Sponge Filters, with links to ATI Filter Max Sponge Pre-Filters, Aquarium Filter Kits & Hydro Pond Filters




DIY CO2 Reactor, Diffuser; Using Sponge Pre-Filter & Pump


Sponge CO2 Reactor, Diffuser for Planted Freshwater Aquarium

Updated 10-20-11

Another use for a Sponge Filter, whether a standard Sponge Filters or a Sponge Pre-Filter (such as the Filter Max #2 pictured here) is as a diffuser/reactor for CO2 systems.

This DIY CO2 Reactor/diffuser works better than just about any other according to my friends in the industry who are expert planted aquarium maintenance pros. It is similar to the gravel vacuum with a sponge plug method popularized in a planted aquarium forum in that this method utilizes a top-notch sponge filter material for better CO2 absorption then slow dispersion. As well the Filter Max Sponge Filters have a secure cap that does not blow off under pressure from the water pump, unlike the other method.

This method is an excellent choice for use with the simple Jungle Fizz Tabs CO2 system as well as Gelatin, DIY Yeast, and even professional regulated CO2 canisters

Filter Max CO2 Reactor, Diffuser Diagram for Planted Freshwater Aquarium (1) As per the picture to the left, connect a relatively slow pump such as the Rio 200 Pump (138gph) to what would normally be the pump pick up, but in this case, the flow is directed downward so as to trap the CO2.
(2) Then drill a small hole so as to add an air line control valve (such as found in the Lees Valve Set #14104)which then goes to the source of the CO2.
From this valve run airline tubing to your CO2 source.

Use the valve to regulate CO2, but the water pump at least in part keeps the CO2 contained until it is absorbed through the sponge material.

(3) Add an in-line air check valve as close to valve as possible to prevent water back up into the airline tubing once the CO2 is exhausted. I often find that it is best to still "blow out" the airline (by mouth) prior to adding to fresh CO2 each day.

And simple, you're done!

In controlled tests using s Sponge Filter as compared to a Ceramic air stone or standard reactor/diffusion bell, the Sponge Filter achieved much higher dissolved CO2 levels when calculated with KH and pH tests

CO2 Gas Reaction BottleThe use of a homemade pressurized bottle can be used for Jungle Fizz Tabs or DIY yeast CO2 generators.

*For further planted freshwater aquarium information:
Aquarium Plants; General Care, Beginner to Advanced

*Another tip to secure filter intakes, tubing, etc. are the ZooMed Mag Clips. Although their primary use has been for aquarium heaters, I have adapted these for lift tubes, air line and much more.

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