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  • Hydro-Sponge Filter I--HS910 - Aquarium Technology, Inc.
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Hydro-Sponge Filter I--HS910 - Aquarium Technology, Inc.

by Lustar

List Price: $16.99
Price: $8.99 + $5.99 shipping
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In Stock.
Ships from and sold by Petsolutions.
  • Aquatic
  • Filtration
  • Sponge Filters

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Frequently Bought Together

Hydro-Sponge Filter I--HS910 - Aquarium Technology, Inc. + Tetra 77851 Whisper Air Pump, 10-Gallon + PENN PLAX Standard Airline Tubing Air Pump Accessories, 25-Feet
Price for all three: $22.75

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Product Details

  • Shipping Weight: 3.2 pounds (View shipping rates and policies)
  • ASIN: B0002602S2
  • Average Customer Review: 4.6 out of 5 stars  See all reviews (22 customer reviews)
  • Amazon Best Sellers Rank: #15,869 in Pet Supplies (See Top 100 in Pet Supplies)
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Product Description

HYDRO-SPONGE FILTER V HS950 (125GAL) For aquariums up to 125 gallons in size. Provides biological and chemical filtration. Easy to clean. Can be used with a power head. Raised off bottom. Sponge size 4 x5 3 3/4. Size including the base, step extension, and lift tube is about 11'. HYDRO-SPONGE FILTER IV HS940 (80GAL) For aquariums up to 80 gallons in size. Provides biological and chemical filtration. Easy to clean. Can be used with a power head. Raised off bottom. Sponge size 4x 4 3/4. Size including the base, step extension, and lift tube is about 11'. HYDRO-SPONGE FILTER II HS920 (20GAL) For aquariums up to 20 gallons in size. Provides biological and chemical filtration. Easy to clean. Can be used with a power head. Raised off bottom. Sponge size 4 x 2 3/4. Size including the base, step extension, and lift tube is about 11'. HYDRO-SPONGE FILTER I HS910 (10GAL) For aquariums up to 10 gallons in size. Provides biological and chemical filtration. Easy to clean. Can be used with a power head. Raised off bottom. Sponge size 2 x 3 3/4. Size including the base, step extension, and lift tube is about 9'. HYDRO-SPONGE FILTER III HS930 (40GAL) For aquariums up to 40 gallons in size. Provides biological and chemical filtration. Easy to clean. Can be used with a power head. Raised off bottom. Sponge size 4 x 3 3/4. Size including the base, step extension, and lift tube is about 11'.


Customer Questions & Answers

Customer Reviews

4.6 out of 5 stars
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See all 22 customer reviews
In sum, a clever and elegantly simple device which works very well.
Ronald L. Russell
If you take some seasoned gravel too, you can immediately add a tankful of fish without worrying about ammonia spikes etc.
HSB
Overall, I would recommend this to anyone looking for a new filter!
wystearya

Most Helpful Customer Reviews

35 of 37 people found the following review helpful By Ronald L. Russell on October 15, 2006
Most aquarium filters now use a motor to force water through some kind of filter pad which must be replaced at intervals. However, before there were reliably sealed electric motors, most home aquariums moved water using the "airlift" principle, in which a rising column of bubbles pulled water through the filtering material. This is an elegant and just about failsafe method. Debris in the tank cannot ever jam the external air pump which feeds the filter, and if electricity is interrupted, the filter cannot lose siphon, it simply starts bubbling again when power is restored to the air pump. Many fish love to play in the rising stream of bubbles.

Hydro Sponge filters, first marketed in the 1990's, are a more recent application of the airlift. Hydro Sponge I is intended for aquariums up to 10 gallons. Made of dense, strong plastic with a weighted base which holds the sponge up away from the aquarium bottom, they dismantle easily for cleaning of the sponge. The pores within the sponge provides an enormous surface area for colonization by beneficial bacteria providing very thorough biological filtration. They can be powered by an air pump with or without an airstone (using an airstone will give finer bubbles and make less noise), or with an electric powerhead for those with larger tanks or who simply feel the need for more energetic water movement in the tank.

It is difficult to imagine such a simple device working well. Surprisingly, they are excellent, and can be used as the only filter in the tank for many applications. I've used them on tanks sized from 10 gallons up to 75 gallons, always with good results.
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17 of 17 people found the following review helpful By HSB on April 10, 2011
This review is for the Hydro I specifically, but it applies to all of the Hydro Sponge Filters.

The Hydro I Sponge Filter is the best for smaller tanks (5 or 10 gallons), just as its counterparts (the Hydro II, III etc.) are great for their respective size tanks. Other types of sponge filters exist on the market, but the Hydro ones are the most efficient because you can put an airstone down the shaft of the filter to get the water going through the majority of the sponge's surface. In addition, the sponge sucks up a surprising amount of debris and waste so it is good for a certain amount of mechanical filtration as well. As other reviewers explained, about once a month you simply squeeze the sponge "clean" in the tank water sitting in your bucket during the water change in order to ensure that you don't kill the bacteria by using chlorinated tap water. The water generally becomes dark brown or black, and you get a sense that you have really cleaned the tank well. (For the more squeamish types, the sponge smells like healthy earth so it is completely inoffensive. You can then use this water to feed house plants some nutrients, if you want!)

Pros: I am a great proponent of the use of sponges because I have never had problems with water readings as a result of using biological filtration. Sponge filtration is much, much more than a backup for canister or hang on power filters that clean a large number of gallons per hour. Biological filtration keeps the tank clean using beneficial bacteria and aerates the tank at the same time. Using a gang valve, you can aerate a little or a lot, depending upon whether the type of specimen you are keeping likes currents or calmer water.
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10 of 11 people found the following review helpful By Airyanna Rose on November 15, 2010
Verified Purchase
I bought this sponge filter for my angelfish, who were suddenly spawning every week. The babies were not able to survive if I left the regular filter on. I ended up having to move them to a ten gallon tank, and thus the need for this filter.

I have to say, I've never had a better filter. You attach an aerator line to the inside, and that's the only thing you need. The air bubbles oxygenate the water while they also work to draw water through the sponge. All the muck that usually accumulates pretty quickly in my tank was drawn in, and the sponge works to break it all down naturally, which is actually healthier for my fish and plants. And no babies were harmed by this little device. it's gentle, but effective.

And the best part is that you do not have to buy filters! Just rinse and squeeze the sponge under room-temp water for a moment and you're done. I'm definitely going to replace my old money-devouring filters in my 55 gallon tank with some like this. These are well worth buying, and actually pretty cheep considering it all. I advise anyone thinking of getting one of these to make the leap. You won't be sorry.
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3 of 3 people found the following review helpful By torval on April 23, 2011
Verified Purchase
what can i say? a simple sponge filter perfect for a 10 gallon tank that houses anything small that a power filter might suck in. baby shrimp, fish fry, etc. low maintenance, low cost, low electricity use. great filter.
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2 of 2 people found the following review helpful By David B. on June 17, 2012
Verified Purchase
After purchasing a pair of small salamander larvae and moving them from their plastic 'critter keeper' to a 5.5 gallon aquarium once they had grown, we were at a loss for filters. We tried a hang on back, and the current was just too strong. We tried an internal filter and not only did it raise the water temperature substantially, but just didn't work very well.

At the advice of several members of a salamander forum, I ordered this filter and couldn't be happier. It's quiet, much more effective than the other filters we've tried, and oxygenates the water without creating harsh currents and/or water flow. Set up was a breeze and our caudata larvae are already much more active and spend a lot of time out in the open now that the water is so calm. The fact that this filter keeps the water crystal clear also makes viewing them much easier.

So whether you've got fish fry, amphibian larva, or something that just needs peaceful water conditions, I'd definitely recommend this product. Two thumbs up.
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