Tropical - Fish - Pictures .com

This is a tropical fish site for all tropical fish enthusiasts from beginner to expert. It has some nice tropical fish pictures and will hopefully have something of interest for all freshwater and marine fish keepers. These tropical fish pages provide some information about some of my favourite fish, along with tropical fish pictures of them. I have kept fish for many years now, ranging from community to marine. Over this period I have been drawn towards catfish, and the cichlids, which I must confess, through there antics have become my favourites. I now keep African and American cichlids, along with some catfish and plecs.

 
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Pump and Filter

In "theory" pumps and filters are not necessary for tropical fish keeping if a balance of plants and fish is kept. In reality this is almost never the case and the price of these devices is low enough for every fish keeper to have them.

Fish need oxygen to survive. They extract their oxygen from the water by passing it through their gills. In natural lakes and rivers oxygen is available either by aquatic plants producing it through photosynthesis or atmospheric oxygen being naturally dissolved in it during the normal flow of water. The aquarium has to be provided with additional oxygen. This is where the pump comes in.

Pumps provide aeration (oxygen introduction) to the water. A plastic pipe from the pump is normally anchored at the bottom of the tank. The pump produces a large stream of bubbles. ( Note : Make sure the pump is positioned above the level of water otherwise when the pump is turned off water may flow down the pipe and back into the pump. Water and electricity don't mix well ) The air bubbles can be broken down by air stones which come in various sizes, ( a large air wall which releases bubbles all along the back of the tank is good; not only does this aerate the water but it looks attractive and fish love swimming through the bubbles) On their way to the surface these small bubbles release a small amount of oxygen and collect a small amount of carbon dioxide. They also keep the water moving causing circulation. This helps to distribute heat, nutrients and other dissolved gasses. In this way "old" water is effectively constantly replaced by new. When purchasing a pump make sure it is powerful enough for your tank and your needs. Moat pumps specify the water volume they can filter providing a guide to tank size. The staff at your local aquarium supplier will be happy to give you advice on which pump is right for your tank size. Pumps also provide filtration. The three most common types of filters available today are internal, external, and under gravel, each with its own benefits.


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