Internal Aquarium Power Filters
Without a filter, your aquarium would be dirty and uninhabitable, making the fish very unwell. You should therefore never attempt to keep fish without one.
How filters work
Although different types of filter can do different things, they all perform two important tasks:
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Mechanical filtration is the trapping of solid waste. Sponges and other ‘mechanical’ filter media act like a sieve, straining particles from the water.
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Biological filtration is the removal of dangerous dissolved wastes from the water by naturally occurring bacteria.
These special nitrifying bacteria convert ammonia into nitrite, and then nitrite into harmless nitrate. This process is called nitrification, and it occurs on special biological media. The filter is the most important piece of equipment in your aquarium, performing a number of jobs:
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Trapping solid waste and removing it from the water
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Removing toxins such as ammonia and nitrite
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Removing dissolved organic matter from the water, keeping it crystal clear
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Aerating water, increasing its oxygen content
Types of filter
Although all filters offer both mechanical and biological filtration, they differ in their ease of use, efficiency, and overall ability to keep the aquarium healthy. All TetraTec filters are designed to offer a combination of efficient filtration and ease of use. There are two main types of filter to choose from.
Most people begin with an internal filter and move on to an external as they progress. However, with modern external filters being so easy
to use, more people are choosing to start with them. The size of filter you need depends on the volume of your aquarium. The packaging will tell you what size of aquarium the filter can manage, so it is simply a matter of matching the two up.
Internal filters
These filters fit inside the aquarium, fixing to the glass with rubber suckers. They usually contain a sponge that works both mechanically and biologically, to remove ammonia and solid waste. They are ideal for smaller aquariums, or those that are not heavily stocked with fish.
TetraTec IN plus internal filters are suitable for aquariums up to 200 litres (44 gallons). As well as working both biologically and mechanically, they blow air bubbles into the water to increase oxygen levels. The sponges can be removed without taking the whole filter out of the aquarium, making maintenance easier. An optional charcoal sponge is available that keeps aquarium water crystal
clear.
Tetra Tec In Plus Internal Filters
Easy-to-use internal filters for keeping aquarium water healthy.
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Filter start button makes starting filter easy
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Snap valve shuts off water flow for no-mess access to media
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Robust design
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Comes complete with media and pipework
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Easy maintenance - no need to remove the entire filter, as all components can be quickly and easily removed in-situ
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CE certified, TUV/GS tested - safety and reliability assured
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Adjustable flow-rate
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Filter sponge split into two segments - one can be replaced whilst other maintains population of beneficial bacteria
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Outlet nozzle can be rotated 180° for flexible flow direction
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Activated carbon sponge also available, for cleaner, clearer water
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2-year guarantee
Application
Simply attach your IN plus filter to the side of the aquarium using the suckers provided, ensuring that it is submerged. The flow rates can be adjusted with the flow-control dial, and the flow can be redirected with the rotating outlet. To clean the sponge, simply wash it in a bowl of aquarium water, but NOT under the tap. Tap water will kill the friendly filter bacteria. Wash or replace one sponge at a time. Always read the instructions carefully before use.
Fluval U Series Underwater Internal Aquarium Filters
The 3 stage filtration with Biomax for superior aquarium water quality, flip-Top access for quick and easy cartridge replacement and three way flow control make the new Fluval U Series the benchmark in underwater filtration.
Fluval underwater filters with three stage filtration are ideal for use in fresh, marine or reptile environments.
Stage 1 foam removes large particles.
Stage 2 poly/carbon cartridge traps fine debris, improves water clarity and removes impurities.
Stage 3 Biomax provides optimal biological filtration efficiency.
For aquariums, terrariums and turtle tanks
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Ideal supplemental or stand-alone filter, or for installations where external filtration is not possible
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Filters debris and provides optimal biological filtration
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Silent and efficient
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Simple to install and maintain
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Engineered and manufactured in Italy
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Top output for maximum circulation and oxygenation.
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Integrated spray bar provides even, gentle flow for planted aquariums.
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Bottom output for deepwater agitation.
