Best Filters For 100-125 Gallon Aquariums

Fluval is a reputable brand in the world of aquarium pet lovers thanks to the quality of the aquarium filters they make. The Fluval 406 canister filter features a very large filtration capacity making it the best option to keep your 100 gallon fish tank clean for a long period.

Fluval 306 canister filter. Images and information from Fluval Aquatic

The filter comes with four large media baskets for you to put any filter media into. The mechanical filtration stage is achieved through vertical large foam pads to capture more debris, prevent clogging and reduce maintenance. The design also makes it quick to maintain the mechanical media without having to remove media baskets.

Despite not being the quietest canister filter, the Fluval 406 operates quietly with its sound dampening impeller design. The impeller is also designed to last a long lifetime. Besides the good impeller, other parts of this filter are made of high-quality materials making the entire unit very durable. Some hobbyists reported that their Fluval 406 canister filters can last for over five years without any problems.

If you are finding a versatile hang-on-back filter for your 100 gallon aquarium, the AquaClear 110 power filter is the best option. The filter boasts of its very large filter capacity that is 7 times as much as that of comparable models. This means it can accommodate a huge amount of filter media for better filtration and impressive water quality. The large filter chamber also allows you to use any filter media you want.

Cycle Guard with Biomax. Image from Fluvalaquatics.com

It comes armed with a large foam pad, a bag of BioMax ceramic rings and an activated carbon bag. These filter materials are included in a patented re-filtration system (Cycle Guard) from Hagen Fluval that offers many helpful features. Thanks to the Cycle Guard, the flow rate of the filter can be adjusted but not affect its filtration efficiency. Moreover, this system also enhances the filtration efficiency by expanding the contact time between the filter media and the water.

If you are finding a large filtration system for your 100 gallon fish tank or turtle tank, this trickle box filter is one of the best choices. It features a brand new design to optimize biological filtration function and achieve clean and clear water for your aquarium.

The way how this trickle filter works is very easy to understand. It is powered by a water pump (buy separately) which pulls the water from the aquarium into the rain pipes of the filter. These rain pipes trickle the strong water flow from the pump into a lot of smaller ones that then go through the filter boxes containing filter media for filtering. The double rain pipe design helps to avoid spillover regardless of the power of the pump. The ideal pump to use with the filter should have a flow rate of 740-1100 gallons per hour.

The product comes with 18 large filter boxes that are sorted into three layers and are great places for accommodating a huge amount of filter media. Each box is pre-drilled with a lot of hoses which allow the water to go through. Thanks to this mechanism, the water is enriched with oxygen before it flows through biological filter media, which promotes the activities of friendly aerobic bacteria for better biological filtration. The oxygen-rich water is also good for the healthy growth of your fish.

The Penn Plax Cascade canister filter is a very popular choice because of its very affordable price and quality. It provides a maximum flow rate of 350 gallons per hour and is rated for up to 100 gallon aquariums, both fresh and salt-water. It also features flow-rate control valves for easy adjustment to fit different use purposes.

The Cascade 1000 is easy to install since it comes with all necessary accessories to connect to your tank. The setup process will take only about 30 minutes and the filtration process delivers incredible performance in less than a day. It is fitted with a quick-push primer for hassle-free setup. The two independent directional full degree rotational valve guarantees worry-free placement.

The Pingkay canister filter is an affordable and cheap option you can buy for your 100-125 gallon aquarium. The built-in pump is capable of achieving a maximum flow rate of 575 gallons per hour (approx 2000 liter per hour) that will ensure the water are constantly circulated and cleaned. It features an advanced filtration technology that eliminates all biological, mechanical and chemical impurities from your fish aquarium. Its built-in 9-Watt UV sterilizer is great in killing spores of algae and offending bacteria, viruses, and parasites.

The canister filter offers 5 stages of filtration with its 4 media baskets and a UV stage. The filter media baskets provide for easy use since you can fill them separately. These trays also feature practical handles to make handling easy and without messes. You will also love the quick-disconnect coupling on the cover lid (top surface) which allows you to easily remove the hoses from the canister filter without having to empty it for faster and leak-free maintenance.

The Hydro Professional 450 external canister filter is one of the quietest canister filters currently on the market. It is fitted with a powerful pump with a maximum flow rate of 320 gallons per hour and ideal for a 100-125 gallon fish tank. The filter comes with everything you need for the setup, even different types of filter media.