Hydor 350 Review: Don’t Buy Before Reading This!

Having a reliable water filtration to serve your fish tank will ensure your aquatic buddies always have access to fresh air.

If you are looking for a high quality canister filter for the job, then you might want to invest in the Hydor Professional External Canister Filter. Although still new in the market, this Hydor filter has been making waves in the fish keeping community.

Built with a high quality sturdy plastic material, this unit is your best bet towards providing your little guppies with a conducive environment of clean and clear water.

It features a convenient design that allows for easy storage around the tank stand. It comes with an impeller securely positioned on a ceramic shaft which helps to prolong the life of the motor.

The filter media has a layout and size that gives you a lot of customization option. The device motor is well insulated and doesn’t produce any noise or disturbance. More so, unlike some of its counterparts, this unit comes with a solid hose in addition to its rotating hose attachment.

Installation is pretty easy, so you might not need to hire a professional. The filter packaging includes a detailed instruction manual that is very easy to follow. However, you might still want to get help if you don’t feel confident enough.

The efficiency of this unit is optimal, which is why there’s so much hype about it.

In this review, we are going to look at the facts and figures that make the Hydor 350 one of the best canister filters in the market for the money.

Hydor Professional External Canister Filter – Aquarium External Filter – Telescopic Intake Tubes, Easy Priming – EcoSystem in a Box – Biological, Mechanical, Chemical Filtration – 190 to 345 gph
  • The hydro professional 350 Aquarium External 280GPH Filter is a complete eco-system in a box
  • All the biological, mechanical and chemical filtration that any requires for a healthy and long-lived Aquatic experience
  • From the easy priming feature to the telescopic intake tubes, everything had been made easy
  • Country Of Origin: United States


  • Setup is super easy
  • Equipped with a safety lock system
  • Incredible flow rate
  • Priming is easy
  • Reasonable price
  • Easy usage and maintenance


  • Replacement parts may be scarce

Features and Benefits

So much has been said about this Hydor filter that makes it very easy for many people to believe it’s all hype. In order to clear the air, let’s take a close look at the features and functionality of the filter.

Sturdy construction

When handling this filter for the first time, the first thing you will notice about it is its sturdy build, which can be attributed to the choice of high quality plastic used for its construction.

This makes it “tough” and able to meet all your filtration needs. Even when used in the most demanding situation, it will still perform without breaking down.

The sturdy construction also helps to ensure its durability. This is not like one of those filters that will break down after few months of use.

A four-locking clamp system is added to the unit to provide support and ensure the optimal performance of the device motor. All the filter parts are tightly sealed to prevent possible water leaks.

Easy Setup

Many canister filters out there do not come with clear instructions on how to install them. As a result, only users with previous experience can really get around them. Luckily, Hydor models are not that way.

The Hydor 350 in particular is one of the easiest filters in the market anyone can assemble and install, even if you’ve never installed a canister filter in the past. It comes with simple and clear instructions to help you put the unit together in less than one hour no matter your skill level.

It is also important to note that this machine is very easy to clean. It’s not like one of those filters that produce a lot of mess inside when opened for maintenance. So you don’t have to worry about getting goosebumps.

The filter is very easy to dismount and open. Don’t forget to lock the main supply hose before you start. This will greatly help to reduce the amount of water dripping from the device.

Also ensure you remove the impeller on the ceramic shaft for thorough cleaning. Doing this will increase the life of the motor.

Great Flow Rate And Filter Capacity

When choosing any aquarium filter, flow rate and filter capacity are two areas you mustn’t joke with.

You want to go for a filtration system that promises an impressive flow rate at all times. The filter capacity should also be able to serve your tank size. Luckily the Hydor 350 does not disappoint in this area.

Hydor has a flow rate that ranges between 240-280 gallons of water per hour. This is definitely something to laud about, as seen in the number of satisfied users who can’t help but express their delight.

In terms of the tank size it can take on, anything between 20 to 150 gallons is a good match.

With this particular filter, you get up to 3 media trays which can be arranged to your desired preference. Three media trays might not sound like too much, but it definitely gets the job done.

All filter media required to meet the filtration needs of the aquarium are provided except for carbon. But you can purchase this easily.

Silent Operation

As a new brand in the market, many wouldn’t expect Hydor to have mastered the art of making low noise filtration systems. But this is not actually the case.

In fact, their filters including the Hydor 350 are some of the most silent canister filters out there. Even if you have to use it often, it will deliver a consistent silent operation.

The quiet operation can be attributed to the insulated motor of the filter.

No more humming sound, as in the case with many conventional filters. In fact, you may need to feel the machine with your hand to actually know if it’s running.

Frequently Asked Questions

1. Does it come with a wall plug?


2. Can the strainer be adjusted?

Yes, it can be adjusted.

3. What’s the tube diameter?

The inlet side is ¾” and the outlet is 5/8”

4. Is the black coarse sponge charcoal activated?

No, it lacks charcoal activation

5. Does it come with hoses?

Yes, it does.

The Bottom Line

Overall, this unit boast of a premium performance which ensures your aquarium is filled with water that is clean and crystal clear. It has a high capacity that is not common with many products in its category.

If you want a filter unit you can rely upon to deliver an efficient performance for your aquarium, then the Hydor 350 is the way to go.

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