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Best fish filter: Fluval FX4 Canister Filter vs Polar Aurora External Filter

An aquarium is the entire world of your fish, which determines your fish’s health happiness, and lifespan. In order to keep the optimal and proper water condition, the best fish filter is indispensable.

The fish tank filter helps clean and purify tank water, removing fish waste, old food, decaying organic matter, and potentially harmful chemicals, such as ammonia.

But it is very easy to get confused when choosing the right filter for your aquarium between many different types and brands of them out there. This is why we want to introduce here two quality filers: Fluval FX4High Performance Aquarium Canister Filter vs Polar Aurora External Aquarium Filter.

#1 Flow rate

It is obvious that the first important factor when choosing a filer is considered if it works effectively with your tank or not. Always remember to check the flow rate of the filtration unit, which usually measure by how much water it can move every single hour.

Generally speaking, the filter can handle your tank is the one that can be able to move ay least 3 times the amount of water in your tank per hour.

Fluval FX4 filer can handle 700 gallons of water through its system per hour, which means it can be used for up to 250 gallons.

Polar Aurora filter comes in 4 sizes that you can consider to get the best suitable one for your tank. It can be able to handle between 265 gallons to 525 gallons per hours. It is good for up to 200 gallons of tank size.

#2 Space & Design

There are two main types of filters are internal and external filers. Fluval FX4 is a canister filter, which means it will be mounted inside the tank, you will not have to concern if it fits with the space you have or not.

In addition, Polar Aurora is External Aquarium Filter with Built-in Pump Kit Canister. Before buying, you have to ensure that you have enough space to place it, if not you will have to move your tank to the other placement. But the advantage is that it will not take the living space inside the tank of your fish as well as the room for decoration like an internal filter.

Polar Aurora is measure 12 x 12 x 19 inches and Fuval FX4 is larger: 15.6 x 15.6 x 17.7 inches.

#3 Filtration effective

The best aquarium filters will come with at least 3 stages of filtration and more. In terms of filtration type, your filter should come with mechanical, biological, and chemical filtration.

Fluval FX4 has an effective five-stage filtration system, providing all three types of filtration.

Smart Pump with microchip technology continuously monitors and optimizes pump performance. You just need to add water, plugin and the Smart Pump will turn on automatically. Trapped air auto-evacuated once per 12 hours to ensure maximum efficiency.

Polar Aurora is 4 stages of filtration. It is features 4 built-in internal trays, which allow users to add their own filter media. Moreover, it also comes with a 9 watt UV light, which will emulate get rid of algae spores, bacteria and improve water clearness.

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