Hang On Back Aquarium Filter: Best HOB Filters & Reviews
When maintaining a thriving saltwater aquarium, choosing the right filter system is paramount. This is where the hang on back (HOB) aquarium filter comes into play. As the name suggests, these filters hang on the back of your aquarium, making them a sleek and space-saving option for Fish-only or Fish-only with Live Rock (FOWLR) and Reef tanks.
The primary purpose of an HOB filter is to provide mechanical, biological, and chemical filtration, helping maintain pristine water conditions. Let's delve into the intricacies of these filters, their pros and cons, and essential factors to consider when selecting one for your aquarium.
Understanding HOB Filters: A Closer Look
HOB filters are a popular choice due to their convenience and simplicity. They are designed to fit most aquarium models, making them an excellent option for both beginners and experienced aquarists.
HOB filters typically comprise a motor-driven impeller, intake and output nozzles, a filter medium chamber, and a powerhead to circulate water. They sit on top of the aquarium's back and are secured in place, drawing water in at the bottom and expelling it from the top, creating surface agitation for optimal gas exchange.
Mechanical Filtration
Mechanical filtration in HOB filters is usually provided by filter sponges or filter media like polyester ordstuff. These remove suspended solids, uneaten food, and other visible waste from the water.
Sponges, for instance, trap larger particles and allow beneficial bacteria to grow on them, contributing to biological filtration. Regular cleaning or replacement of the mechanical filter medium is crucial to maintain filter efficiency.
Biological Filtration
Biological filtration in HOB filters occurs when beneficial bacteria colonize the filter media, breaking down waste products like ammonia and nitrites. This process, known as the nitrogen cycle, converts toxic waste into less hazardous compounds, ultimately leading to nitrate.
To maintain a thriving biological filter, avoid rinsing the filter media in tap water, as this can kill the bacteria. Instead, rinse it in old tank water or use a filter cleaner designed for bacterial maintenance.
The Benefits of HOB Filters
HOB filters offer numerous advantages, making them an excellent choice for many aquarium setups:
- Space-saving design: HOB filters don't take up additional floor space, making them perfect for smaller homes or apartments.
- They also generate less noise than canister filters, ensuring a peaceful environment for both you and your fish.
However, no filter is perfect, and HOB filters also have their downsides:
Potential Drawbacks of HOB Filters
Some disadvantages of HOB filters include:
- Skimming issues: HOB filters may struggle to remove surface debris and oils, as they don't skim the aquarium's surface like canister or sump filters.
Moreover, the impeller in the powerhead can degrade over time, potentially leading to expensive replacements.
Additional Maintenance Considerations
In addition to regular filter media cleaning or replacement, monitor the impeller and motor in your HOB filter. Replace any damaged parts promptly to ensure optimal performance and prevent further wear and tear.
Keep an eye on the output water flow as well. If the flow decreases significantly, it might indicate a clogged impeller or worn-out powerhead.
Choosing the Right HOB Filter for Your Aquarium
Before selecting an HOB filter, consider the following factors to ensure the best fit for your aquarium:
Aquarium Size and Turnover Rate
Determine your aquarium's volume and calculate the desired turnover rate – the amount of water the filter should process in an hour. As a general rule, aim for a turnover rate of four to six times the total aquarium volume per hour.
Ensure that the HOB filter you choose can handle this capacity efficiently. Some HOB filters are designed for specific aquarium sizes, so always check the manufacturer's guidelines for the best results.
Filter Media Flexibility and Compatibility
Consider the filter media types compatible with the HOB filter you're interested in. While most filters use standard filter sponges, some may require specific media that can limit your choices.
Opt for an HOB filter that accommodates various media types, allowing you to customize your filtration as needed.
After gathering sufficient information about the different HOB filters available, you'll be equipped to make an informed decision that best caters to your aquarium's filtration needs. Regular maintenance and responsible usage will ensure that your HOB filter maintains your aquarium's water quality, contributing to a thriving marine environment.
In the pursuit of keeping your aquarium healthy and vibrant, exploring the world of HOB filters offers a straightforward and efficient solution. By understanding the science behind these filters, weighing their advantages and disadvantages, and selecting the right one for your aquarium, you'll be well on your way to creating a flourishing underwater ecosystem. Don't forget to take pride in your aquarium-keeping journey, and share your knowledge with fellow enthusiasts to inspire a love for marine life in your community.