Aquarium Fish, Tropical Fis, and Goldfish for sale  
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Aquarium Gravel
This page continues the discussion of Aquarium Equipment with information and advice about aquarium gravel and gravel washers that are used to clean aquarium gravel.
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Pet Fish Talk, an MP3 PodCast, is a weekly internet talk show about keeping pet fish, such as Tropical Fish and goldfish, in aquariums, fish bowls, and ponds. The shows were hosted by the Bailey Brothers, DrTom and Nevin, Click on this image for more information.  
Click here to hear a Special Interview on Pet Fish Talk about the EcoBio-Block Family of Products, which are very effective at keeping aquarium water clear.

1. What is Cultured Gravel?
is normal aquarium gravel with a layer of beneficial bacteria growing on the surface of the pieces of gravel.

You can buy normal aquarium gravel in most stores that sell pet fish. But new gravel in the bag will not be cultured. Sometimes a fish store will sell you a handful of cultured gravel from one of their aquariums. 

Fish bowls need a layer of cultured gravel about 1/4-inch thick, so the bacteria living on the gravel can biologically remove waste from the water in the fish bowl.

But an aquarium with a power filter and a BIO-Wheel does not need gravel, because the beneficial bacteria grow abundantly on the BIO-Wheel.

A layer of gravel, that is more than 1/4-inch thick, often gets full of uneaten food and causes pollution problems. So don't have a layer of gravel more than 1/4-inch thick in your freshwater aquarium or in your fish bowl.

If you are a beginner with your first aquarium, be sure you get a filter with a BIO-Wheel and don't put any gravel in your aquarium.

If you like the appearance of gravel, and you've mastered feeding your fish so there are no uneaten bits of fish food to pollute the gravel, then add a thin layer of gravel not more than 1/4-inch thick.

If you decide to have gravel in your aquarium, use your net to stir it gently to see if the gravel is full of waste. If it is, then you need to immediately clean your gravel. Click here for more information about cleaning gravel. In the future be sure your fish eat all the food you feed them. Click here for more information about feeding fish.

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2. Safe Gravel
Not all gravel is safe for fish. Some gravel may contain toxic minerals. So you should always buy gravel that is labeled for use in aquariums. Generally everything that goes into your aquarium should be labeled for use in aquariums.

Where can you get cultured gravel for your fish bowl? We send a bag of cultured gravel with each of our Fish Bowl Kits. Alternatively you could ask a friend, who has an aquarium with gravel or ask your local pet store for some gravel from one of their aquariums.

You only need a handful of cultured gravel to mix with your new gravel. The beneficial bacteria from the handful of cultured gravel will quickly grow and cover your new gravel.

3. Gravel Vacuums
If you have only 1/4-inch of gravel in your aquarium, you can just stir it with your net each day to help particles in the gravel get into the filter.

If you have more than 1/4" of gravel, you should not stir the gravel. Instead wash the gravel with a Gravel Vacuum. Don't get the kind of gravel washer with a bag that puts the water back in the aquarium.

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noSpill, Clean and Fill, the Only Complete System to Clean and Change Aquarium Water from Python Products. Click on this ad to learn more about the noSpill.
Links to more information about Aquarium Equipment on other pages in this web site.
     Aquariums, Aquarium Stands, and Covers
     Aquarium Heaters and Thermometers
     Aquarium Filters and BIO-Wheels
     Gravel Washers and Cleaning Gravel
     Aquarium Decorations and Ornaments
     Aquarium Air Pumps and Accessories
     Aquarium Lights and Lighting Fixtures
     Where to Buy Aquarium Equipment
Most of the Aquarium Supplies listed on the pages in this web site can be purchased from our advertisers. Please click on their links and investigate the products that they offer for sale on their web sites.
Click here to see the list of the Bailey Brothers' favorite aquarium equipment.
Books about
Aquarium Filters and Filtration
The books shown below are listed on You can click on the title or on the image of a book to go to the page at, where that book is listed and discussed. In some cases you can preview several of the pages in that book.
Click on this image to go to, where you can learn more about this book.   Aquarium Filtration
By Richard F. Stratton
64 pages
Click on this image to go to, where you can learn more about this book. Aquatic Systems Engineering
By Pedro Ramon Escobal, Martin A. Moe, Jr.
272 pages
Click here to go on to another page in this web site with Customer Comments and our Replies about Aquarium Gravel.
A Comment to Advertisers
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These high rankings pages attract heavy traffic and produce lots of valuable clicks for advertisers. If you are a potential advertiser, click here to contact us and learn about putting your advertisement on a page that is similar to this page.
We offer powerful opportunities to advertise your products and services on this popular web site.
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This page was updated on November 13, 2015.


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Pet Fish Talk is an Internet-Radio Talk Show about Keeping Pet Fish in Aquariums, Fish Bowls and Ponds, that is hosted by the Bailey Brothers, DrTom and Nevin, from 1:00 to 3:00 pm, PT, each Wednesday. Click on this image for more information about Pet Fish Talk.
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