10 Best Filters For 36 Gallon Fish Tanks [2025]
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Finding the best filters for 36 gallon fish tanks can be a challenging task, especially with the overwhelming number of options available on the market. To help you navigate this process, we meticulously shortlisted 10 top-performing products based on factors such as filtration efficiency, ease of use, and customer reviews. Our curated list is designed to save you time and hassle, ensuring you select the perfect filter to maintain a healthy and vibrant aquatic environment for your fish.
Top 10 Filters For 36 Gallon Fish Tanks In The Market
Filters For 36 Gallon Fish Tanks Review
- CRYSTAL CLEAR - Turns CLOUDY and GREEN water crystal clear in 3-7 days. The larger the fish tank, the longer it takes. Reduce the number of water changes in the fish tank.
- DOUBLE FILTRATION - First stage Biochemical Sponge Filter. Second stage 254nm wavelength U-V Light.
- SEPARATE SWITCHES - Control the water pump and fish tank light separately. When you only want to use the aquarium filter function, you can turn off the fish tank U-V light separately.
- SMELLS FRESH - Once the fish tank is full of green will be accompanied by the smell. This green killing machine can reduce the unpleasant smell in the fish tank.
- EASY TO CHECK LIGHT UP - You can easily check that the light is on from the outside of the machine, don't need to take the machine apart to see it.
- WITH ROTATING BIO-WHEEL: Patented Bio-Wheel technology provides excellent wet/dry biological filtration.
- MULTI-STAGE FILTRATION: Delivers mechanical, chemical and biological aquarium filtration to maintain a clean aquatic environment.
- MARINELAND FILTRATION PRODUCTS: Count on Marineland brand for the most reliable, technically advanced aquariums and accessories on the market.
- COMPATIBILITY: Use with Marineland Rite-Size Filter Cartridges (see individual filter for sizing recommendations).
- FIVE SIZES: Available in 75 GPH, 100 GPH, 150 GPH, 200 GPH and 350 GPH sizes.
- UNIVERSAL DESIGN: Tetra Whisper 40i Internal Filter is an all-in-one air pump and water filter system.
- INTERNAL FILTER: Mounts on the inside of your aquarium with clip (included).
- CATCHES DEBRIS: Dense, dual-sided mesh filters debris and fish waste.
- AERATES WATER: Air-driven design filters up to 170 GPH while oxygenating water.
- CONVENIENT DESIGN: Uses large easy to change Bio-Bag cartridges; filter mounts inside aquarium, making it possible to place tank flush against the wall.
- INCLUDES CARTRIDGE: The molded ribbed back maximizes contact with water – includes premium activated carbon.
- BIOLOGICAL FILTRATION: Bio-Foam biological filtration removes toxic ammonia and nitrites on contact.
- QUIET: Decoupled motor with dampeners reduces noise to below 40 dB.
- POWERFUL: Impeller and motor assembly designed for efficient power usage filters 20-to 40-gallon aquariums 5 times per hour.
- SLEEK DESIGN: Designed to fit standard aquarium hoods and canopies, the Aqua-Tech Ultra Quiet Power Filter makes aquatic filtration easy.
- REPLACEMENT CARBON FILTER: Keeps aquarium water crystal clear – removes odors and discoloration.
- CATCHES DEBRIS: Dense, dual-sided mesh filters debris and fish waste.
- FITS TETRA WHISPER WATER FILTERS: Color coded to make it simple to remember which replacement cartridge size to purchase.
- CONVENIENT: Replacement filter cartridges are fully assembled and ready to use.
- USAGE: Change monthly or sooner if needed.
- Use as a primary filter for smaller aquariums, or supplementary filter for larger aquariums
- Sleek design with easy grip water control panel and redesigned media cartridge to trap more debris
- Convenient flip-top lid allows for quick and easy access to filter cartridge for maintenance or replacement
- Position horizontally for shallow tanks, larger tanks with low water levels, or to create a decorative waterfall feature or vertically against aquarium wall to create currents or customized flow patterns
- Designed for freshwater, saltwater and reptile environments up to 40 gallons
- Provides mechanical, chemical, biological filtration plus additional assistance with the Aqueon specialty filter pads
- Self-priming - starts up automatically after cleaning or power interruptions.
- Certified flow rates that assure proper water circulation for improved fish health
- LED indicator light flashes when it’s time to replace clogged cartridges by monitoring actual water levels.
- Internal pump design helps dampen noise and eliminate leaks
- WITH ROTATING BIO-WHEEL: Patented Bio-Wheel technology provides excellent wet/dry biological filtration.
- MULTI-STAGE FILTRATION: Delivers mechanical, chemical and biological aquarium filtration to maintain a clean aquatic environment.
- MARINELAND FILTRATION PRODUCTS: Count on Marineland brand for the most reliable, technically advanced aquariums and accessories on the market.
- COMPATIBILITY: Use with Marineland Rite-Size Filter Cartridges (see individual filter for sizing recommendations).
- FIVE SIZES: Available in 75 GPH, 100 GPH, 150 GPH, 200 GPH and 350 GPH sizes.
- PERFORMANCE – Max. Flow 225GPH (850L/H), Max lift 4ft (1.2m), Power 8.2W. This fish filter is ideal for fish tank size of 40-70 gallons(Choose the right filter for your tank). A filter can’t cover tanks of big differences in capacity (as claimed by some products online)! Follow our recommendations for your tank.
- SAFETY – The aquarium filter is fully submersible with epoxy sealed motor. Each fish tank filter has been submerged in water and tested with super high voltage to ensure the safety.
- 3-STAGE FILTRATION – 3 sponge blocks – coarse sponge, carbonized sponge and fine sponge provide 3-stage filtration. COARSE SPONGE filters out large size impurities such as food residue, fish excrements, plant leaves etc.; CARBONIZED SPONGE removes odor, chlorine and fine particles; FINE SPONGE polishes water before it goes back to tank. PLUS the transparent box makes it easy to check the filtering material when they get dirty. Search code “B09W23YJD7” for the replacement sponges.
- AERATING WATER - Oxygenation is very important to your fish. Different from most of the filters in the market, this turtle tank filter also provides an air venturi and air tubing to increase oxygen supply in your fish tank.
- KIND REMINDER – If your tank is very large, choose 2 filters! Place a filter at both the left and right corners at the back side. You will get full filtration and great water circulation in your tank! PLUS this filter is with dual water outlet to ensure even water distribution in your fish tank!
- CRYSTAL CLEAR WATER – Unlike other fish tank filters on the market, the Atlantis Aqua submersible aquarium filter draws water through the bottom of the filter, rather than the sides. This means the water travels through the full fish filters system rather than taking the easiest path and being partially filtered, like other fish filters.
- NO NEED TO CHANGE FILTER PADS – The filter sponges last a lifetime, so no need for expensive monthly replacements! Can be used as a Turtle Filter. Detachable sections so it can be used as a fish tank filters 20 gallon - 55 gallons and can be used in a goldfish, tropical or saltwater tank.
- HEALTHIER FISH – The internal aquarium filter oxygenates the water which is vital to the health of your pets - they also enjoy swimming in the waves!
- ALL-IN-ONE FILTRATION SYSTEM – Our aquarium filter includes a sponge filter and a biological filter. The filter is 11.4" tall and 2.75" wide but it can be used with one section removed and is 7.6" tall.
- MANCHESTER BASED DESIGNER – We are a Manchester based company that is passionate about providing high quality products whilst offering the best customer service. All of our products come with a 1-year warranty. This filter is not suitable for small shrimp or infant fish.
Our Review Process
To ensure you get reliable product recommendations, we follow a detailed review methodology that includes:
- Market Research: Scanning best-selling and trending products in this category.
- User Feedback: Reviewing customer reviews, star ratings, and complaints.
- Hands-On Testing: Trying select products ourselves when feasible.
- Feature Comparison: Evaluating specs, durability, pricing, and safety.
- Expert Opinions: Consulting with niche experts or credible reviewers.
We independently select the top 10 options based on value, quality, and usability. To learn more, visit our detailed review process.
Key Considerations for Buying Filters for 36 Gallon Fish Tanks
1. Type of Filter
When selecting a filter for your 36-gallon fish tank, it’s essential to understand the different types available. The most common are:
- Hang-on-back (HOB) Filters: Easy to install and maintain, HOB filters are ideal for many aquarium setups.
- Cannister Filters: These provide excellent filtration for larger tanks and can handle a higher bioload.
- Internal Filters: Suitable for smaller tanks or for use as additional filtration in larger systems.
- Sponge Filters: Great for breeding tanks or for tanks with delicate fish, offering gentle water movement and filtration.
2. Flow Rate
The flow rate of a filter is crucial to ensure adequate water movement and oxygenation in the tank. For a 36-gallon tank, look for filters with a flow rate that can efficiently process at least 3 to 5 times the tank volume per hour. Ideally, the filter should provide a flow rate between 100 to 180 gallons per hour (GPH).
3. Filtration System
Consider the filtration system that the filter offers, which typically includes mechanical, biological, and chemical filtration:
- Mechanical Filtration: This removes debris and particulate matter from the water.
- Biological Filtration: Essential for maintaining a healthy aquarium, this process breaks down harmful ammonia and nitrites through beneficial bacteria.
- Chemical Filtration: Involves using activated carbon or other media to remove impurities and toxins from the water.
4. Noise Level
Noise can be a significant factor, especially if the tank is located in a living space. Look for filters that are known for their quiet operation to ensure a peaceful environment. Check customer reviews and product specifications for noise ratings.
5. Maintenance Requirements
Different filters have varying maintenance needs. Some require frequent cleaning and media replacement, while others are more self-sustaining. Consider how much time you’re willing to invest in maintaining the filter and choose one that fits your lifestyle.
6. Size and Design
The size of the filter should fit well with your 36-gallon tank without overcrowding it. Consider the dimensions and design of the filter to ensure it complements the aesthetics of your tank setup. Additionally, check how the filter will be positioned and if it requires any additional space for maintenance.
7. Price and Budget
Finally, set a budget before you start shopping. Filters come in a wide range of prices, and while it might be tempting to opt for the cheapest option, investing a little more in a high-quality filter can save you money and trouble in the long run. Consider the long-term costs, such as replacement media and energy efficiency, when evaluating the price.
FAQs
What size filter do I need for a 36-gallon fish tank?
For a 36-gallon fish tank, it’s generally recommended to use a filter rated for at least 200-300 gallons per hour (GPH) to ensure proper water circulation and filtration. Look for filters that provide mechanical, chemical, and biological filtration for optimal water quality.
Can I use a hang-on-back filter for my 36-gallon tank?
Yes, hang-on-back (HOB) filters are a great option for a 36-gallon fish tank. They are easy to install and maintain, and they provide effective filtration. Just make sure to choose a model that is appropriate for the tank size.
How often should I change the filter media in my tank?
Filter media should typically be rinsed or replaced every 4-6 weeks, depending on the type of media and the bioload in your tank. It’s important to not replace all the media at once, as this can disrupt the beneficial bacteria that help keep the tank’s ecosystem balanced.
Are canister filters suitable for a 36-gallon tank?
Yes, canister filters can be suitable for a 36-gallon fish tank. They offer efficient filtration and can handle larger volumes of water, making them ideal for aquariums with more fish or plants. Just ensure that you select a canister filter that has a flow rate suitable for your tank size.
What type of filter is best for a heavily planted 36-gallon aquarium?
For a heavily planted aquarium, a canister filter or a sponge filter is often recommended. Canister filters provide excellent filtration and can accommodate additional media for biological filtration, while sponge filters offer gentle filtration that is beneficial for both plants and fish.
Is it necessary to have a filtration system for my fish tank?
Yes, a filtration system is essential for maintaining the health of your fish tank. Filters help remove waste, uneaten food, and harmful chemicals, ensuring that the water remains clean and safe for your fish. Without proper filtration, water quality can deteriorate quickly, leading to health issues for your aquatic life.
How can I tell if my filter is working properly?
You can check if your filter is working properly by observing the water flow. If the water is flowing steadily and the filter media appears clean (not clogged), it’s likely functioning well. Additionally, monitor the water parameters regularly; if they remain stable, it indicates that your filter is effectively maintaining water quality.
Can I use a filter without a heater in my 36-gallon tank?
While it is technically possible to run a filter without a heater, it is not recommended for tropical fish species that require a consistent temperature. Heaters and filters often work together to maintain a healthy environment for fish. It’s best to use both to provide stable conditions.
What are the signs that I need to upgrade my filter?
Signs that you may need to upgrade your filter include decreased water clarity, increased algae growth, a rise in ammonia or nitrite levels, or if your tank has become overstocked. Upgrading to a more powerful filter can help improve water quality and support a healthier environment for your fish.
The Bottom Line
In conclusion, selecting the right filter for your 36-gallon fish tank is crucial for maintaining a healthy aquatic environment. The ten products we have highlighted in this article were chosen based on a comprehensive analysis of performance, user reviews, and specific features suitable for a tank of this size. We considered factors such as filtration capacity, ease of maintenance, energy efficiency, and noise levels to ensure that each recommendation meets the diverse needs of aquarium enthusiasts.
By following our curated list, you can confidently choose a filter that will enhance the water quality and overall health of your fish tank. With the right filtration system in place, you will not only provide a clean habitat for your aquatic pets but also enjoy the beauty and tranquility of your aquarium with less hassle. Whether you are a beginner or an experienced aquarist, our guide aims to simplify your decision-making process, ensuring that your tank remains a thriving ecosystem for years to come.
