UV Sterilisers: How to Make Sure You Get the Right One

A UV steriliser is a key component of your tropical tank. It eliminates ‘green water’ caused by the build-up of waterborne pathogens and algae ensuring a safe and clean environment for your fish to thrive. Through UV light rays, it targets free-floating microorganisms without harming any other aquarium inhabitants. But with so many different specifications, it can sometimes be a minefield to try and find the right one. Here are a few key points to keep in mind when investing in a UV steriliser for your tank.

The Type of Lamp

There are two main kinds of UV lamps available: low pressure or high-pressure lamps. Low-pressure lamps are better for sterilisers in aquariums as they target the specific type of tank germicide much better. They also typically run on low-input power and operate around 150oF.

The Length of Lamp

Depending on the size of your tank, you will need to find the appropriate length of lamp to fit. A greater amount of UV light will be emitted into the water, the longer the lamp is. The wattage of the lamp also plays a part so it is best to get a lamp that is 3 or 5 inches in diameter and that has a balance of the appropriate watt power in order for the water to receive an even distribution of sterilisation.

Steriliser Placement

A UV steriliser can be connected in a number of ways. One way is in-line or in-tank where the lamp is fitted inside the main aquarium filter. Another way is as a hang-on device that is attached to the outside of the tank, which requires an additional pump installation. Sterilisers always need a flow source in order for the water to pass effectively through the chamber so that the light can kill the bacteria.

Always remember that proper performance of a UV steriliser relies on the maintenance of other elements in your aquarium too. Be sure to regularly the check temperature, water, filters and oxygenation so that your tropical fish can lead a long, healthy and happy life inside your tank.