When it comes to hang-on-back (HOB) filters, finding one that combines efficiency, quiet operation, and versatility can be a challenge. After trying many options, I’ve found the Seachem Tidal Filter, specifically the Tidal 35 model, to be my absolute favourite. Its design offers ample space for filtration media, operates silently, and allows easy customisation to protect delicate aquarium inhabitants like shrimp.
Table of Contents
- Why the Seachem Tidal 35 Stands Out
- Custom Modifications: Protecting Shrimp with an Inlet Sponge
- Installation and Maintenance
- Why Choose the Seachem Tidal Filter?
- Frequently Asked Questions about the Seachem Tidal Filter
- Conclusion
Why the Seachem Tidal 35 Stands Out
The Seachem Tidal 35 is more than just a standard HOB filter. What immediately impressed me was the large internal space dedicated to filtration media. This generous capacity means you can tailor your filter with mechanical, chemical, and biological media according to your tank’s specific needs. Whether you want to add activated carbon, bio balls, or sponges, there’s plenty of room to customize.

Another standout feature is its silent operation. Many HOB filters can be noisy, which can detract from the peaceful atmosphere of your aquarium setup. The Tidal 35, however, runs quietly, ensuring your tank remains a relaxing environment.
Custom Modifications: Protecting Shrimp with an Inlet Sponge
One of the things I demonstrated was how to modify the filter by cutting and adding a small inlet sponge. This simple addition prevents tiny shrimp from being sucked into the intake, which is a common concern for shrimp keepers. The modification is easy to do and doesn’t affect the filter’s performance.

This tweak not only protects your shrimp but also improves the filter’s mechanical filtration by catching larger debris before it enters the pump. It’s a small change that makes a big difference.
Installation and Maintenance
The Tidal 35 is designed for straightforward installation. Hanging it on the back of your aquarium is simple, and the filter’s design allows for easy access to media compartments for quick cleaning and replacement. This ease of maintenance is crucial for keeping your aquarium water healthy without spending excessive time on upkeep.

Benefits at a Glance:
- Large media capacity for customised filtration
- Quiet operation for a peaceful tank environment
- Easy to modify for delicate livestock protection
- Simple installation and maintenance
Why Choose the Seachem Tidal Filter?
Whether you’re a beginner or an experienced aquarist, the Seachem Tidal Filter offers a reliable and versatile solution for your filtration needs. The Tidal 35’s combination of space, quietness, and adaptability makes it an excellent choice for a wide range of aquarium setups.
Additionally, the ability to add an inlet sponge means you can safely keep small species like shrimp without worry. This flexibility is what sets the Seachem Tidal Filter apart from many other HOB filters on the market.

Frequently Asked Questions about the Seachem Tidal Filter
Is the Seachem Tidal 35 suitable for shrimp tanks?
Yes! With the simple addition of an inlet sponge to the intake, it safely prevents shrimp from being sucked into the filter while maintaining excellent filtration.
How often should I clean the filter media?
It depends on your tank’s bioload, but generally, mechanical media should be rinsed every 2-4 weeks to remove debris. Chemical and biological media last longer but should be replaced or refreshed according to manufacturer recommendations.
Can I use other filtration media besides what comes with the filter?
Absolutely. The Tidal 35 offers plenty of space, allowing you to add a variety of filtration media such as activated carbon, bio balls, or ceramic rings to suit your aquarium’s needs.
Is the filter noisy?
No, the Seachem Tidal 35 operates quietly, making it perfect for tanks in living rooms, bedrooms, or offices where noise could be a distraction.
What tank size is the Tidal 35 best for?
The Tidal 35 is designed for tanks up to around 35 gallons, making it ideal for small to medium-sized aquariums.
Conclusion
The Seachem Tidal Filter, and specifically the Tidal 35, has become my go-to choice for HOB filtration. Its spacious media compartments, silent operation, and easy adaptability make it a standout in the crowded market of aquarium filters. Adding a small inlet sponge is a simple modification that protects vulnerable shrimp without sacrificing performance.
If you’re looking for a dependable, quiet, and versatile filter for your aquarium, the Seachem Tidal 35 is definitely worth considering. It delivers excellent filtration while allowing you to customise and protect your aquatic pets.

This article was inspired from the video Seachem Tidal 35 - My Favorite HOB Filter | Drop a like and subscribe to show your support!
