FISHKEEPER FK135 Canister Filter Layers Gallons 900L 238GPH 12-VOLT 5-35

( Brand: Fishkeeper ), ( Manufacturer Part Number: FK135 ), ( Filter Location: External ), ( Flow Rate: 238ghp ), ( Type: Canister Filter ), ( Tank Capacity: 35 Gal )

Review FISHKEEPER New External Canister Filter Layers 238gph 12 5-35 Gallons

The **FishKeeper FK135 Canister Filter** is a high-performance, versatile filtration solution designed to maintain pristine water quality in aquariums ranging from **5 to 35 gallons**, making it an ideal choice for both hobbyists and experienced aquarists managing medium-sized setups. Engineered with precision, this filter operates at a robust **238 GPH (gallons per hour)** flow rate, ensuring efficient water circulation while minimizing turbulence, which is particularly beneficial for planted tanks, shrimp keeps, or delicate fish species that require stable conditions. Its **9-layer filtration system** combines mechanical, chemical, and biological filtration to deliver comprehensive water purification, removing fine debris, excess waste, and harmful toxins with exceptional efficiency. The first layers feature high-capacity **pre-filter sponges**, which trap large particles and provide a substantial surface area for beneficial bacteria to colonize, while subsequent layers incorporate **activated carbon** for the removal of odors, discoloration, and chemical impurities like chlorine and heavy metals. For those seeking enhanced clarity, the filter includes **ceramic rings** and **bio-balls**, which promote the growth of nitrifying bacteria while also improving oxygenation and nutrient absorption. The **35-gallon capacity** of the filter media basket allows for extended filter runs and reduced maintenance frequency, as the media can be rotated or replaced in sections rather than all at once, optimizing convenience without sacrificing performance. The FK135 s **durable construction**, featuring a sturdy plastic housing and a secure lid with a built-in water level indicator, ensures reliability and ease of use, while its **adjustable flow control valve** enables precise regulation of water movement to suit the specific needs of the aquarium s inhabitants. Whether used in a freshwater community tank, a reef system, or a specialized setup like a betta splasher or a discus display, this filter excels in maintaining a balanced, healthy environment with minimal effort. Its compact yet powerful design makes it a space-efficient upgrade for aquarists looking to enhance filtration without cluttering their setup, while its modular media system ensures adaptability for future adjustments as the tank evolves. With the FishKeeper FK135, aquarists gain a dependable, high-flow filtration solution that combines efficiency, versatility, and ease of maintenance, making it a standout choice for those committed to providing their aquatic pets with the best possible water quality.

The **Fishkeeper FK135 Canister Filter** is a popular choice for larger aquariums, offering strong filtration and customization. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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### **Pros of the Fishkeeper FK135 Canister Filter**

1. **High Flow Rate (238 GPH / 900 L/h)**

- Suitable for tanks ranging from **5 to 35 gallons**, making it versatile for mid-sized setups.

- Provides strong water movement, which helps with oxygenation and debris removal, especially in planted or heavily stocked tanks.

2. **Adjustable Flow Control**

- Allows users to fine-tune water flow direction and intensity, which is useful for balancing currents in the tank.

3. **Modular Filter Media System**

- Comes with **nine filter media layers**, including foam, ceramic rings, and activated carbon, which can be customized for mechanical, biological, and chemical filtration.

- Additional media pockets allow for extra filtration options (e.g., phosphate removers, bio-balls, or specialized resins).

4. **Durable Construction**

- Made of **heavy-duty plastic**, the filter is sturdy and designed to handle continuous use without leaks.

- The lid is securely sealed, reducing the risk of water spills or air leaks.

5. **Easy Maintenance**

- The filter is **self-priming**, meaning it doesn t require priming before first use.

- The media compartments are accessible without draining the tank, making cleaning and replacing media straightforward.

- The **siphon drain system** simplifies water changes by allowing easy emptying of waste water.

6. **Quiet Operation**

- The pump is generally quiet compared to some other canister filters, making it suitable for home aquariums.

7. **Compatibility with Various Tank Types**

- Works well in **freshwater, saltwater, and planted tanks** due to its adjustable flow and media flexibility.

- Can be used in **sump systems** or as a standalone filter for larger tanks.

8. **Affordable for Its Capacity**

- Offers strong filtration at a reasonable price compared to some high-end canister filters.

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### **Cons of the Fishkeeper FK135 Canister Filter**

1. **Heavy and Bulky**

- Weighs **238 grams (likely a typo this seems too light; the actual weight is closer to 10 15 kg)**, making it cumbersome to move or store.

- Requires a **stable, flat surface** to prevent tipping, especially in home environments with limited space.

2. **Media Compartments Can Be Inconsistent**

- Some users report that the **media pockets are not perfectly sealed**, leading to minor leaks if not handled carefully.

- Over time, the rubber gaskets may degrade, requiring occasional replacement.

3. **Limited Brand Recognition (Outside Europe)**

- Fishkeeper is a well-known brand in **Europe and Asia**, but it may not be as widely recognized or supported in other regions.

- Parts and customer service might be harder to access outside these markets.

4. **Flow Direction Can Be Tricky**

- The **adjustable flow control** can be confusing for beginners, as improper setup may lead to weak or uneven water movement.

- Some users find that the **flow direction is fixed** (depending on the model variant), limiting flexibility in certain setups.

5. **Media Replacement Costs**

- While the filter itself is affordable, **high-quality replacement media** (e.g., specialized carbon or phosphate removers) can add up over time.

6. **Not Ideal for Very Small or Very Large Tanks**

- While it covers **5 35 gallons**, it may be **overkill for tiny tanks (under 10 gallons)** due to its size and cost.

- For tanks **above 35 gallons**, a larger canister filter (e.g., 150 GPH) would be more appropriate.

7. **Potential Clogging Issues**

- If not cleaned regularly, the **pre-filter foam** can clog quickly, reducing efficiency.

- Fine debris may accumulate in the pump, requiring frequent maintenance.

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### **Conclusion**

The **Fishkeeper FK135 Canister Filter** is a **strong, versatile, and reliable choice** for aquarists managing **mid-sized tanks (5 35 gallons)**. Its **high flow rate, customizable media system, and durability** make it ideal for freshwater and saltwater setups, including planted tanks. The **ease of maintenance and quiet operation** are additional benefits that appeal to both beginners and experienced hobbyists.

However, its **bulkiness, potential media leakage issues, and limited brand support outside certain regions** may be drawbacks for some users. If space and weight are concerns, or if you need a filter for **very small or very large tanks**, alternative options (such as hang-on-back filters for small tanks or larger canister filters for bigger setups) might be more suitable.

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### **Recommendation**

- You have a **tank between 5 and 35 gallons** and need **strong, adjustable filtration**.

- You want a **customizable media system** for mechanical, biological, and chemical filtration.

- You prioritize **durability and ease of maintenance** over portability.

- You are in a region where **Fishkeeper has good local support** (e.g., Europe, Asia).

- You need a **lighter or more compact filter** (e.g., **Eheim Classic 600 or AquaClear 110** for smaller tanks).

- You require **higher flow rates for very large tanks** (e.g., **Eheim 2250 or Fluval FX4**).

- You prefer **brands with stronger global support** (e.g., **Eheim, Fluval, or AquaClear**).

- Your tank setup is **very sensitive to flow direction** (some filters offer more adjustable outlets).

The **FK135 is an excellent mid-range canister filter** that delivers **reliable performance** for its price range. With proper maintenance and setup, it can significantly improve water quality in a wide range of aquarium environments. However, weigh its **size and potential limitations** against your specific needs before purchasing.

Details:

The Fishkeeper FK135 model is a top choice for Fishkeeper looking to improve the water quality in their aquatic habitats. The external location of the filter allows for easy maintenance and prevents buildup debris inside tank. The New Fishkeeper External Canister Filter is a reliable and efficient filtration system designed for fish tanks with capacity ranging from 5 to 35 gallons. With a flow rate of 238GPH, this 5-layer filter canister is suitable for maintaining clean and healthy water in your aquarium.

part #: fk135 price

• $69.99

specifications aquariumfilterer:

• brand: Fishkeeper
• mpn: Fk135
• filter location: External
• flow rate: 238ghp
• type: Canister Filter
• tank capacity: 35 Gal

returns aquariumfilterer:

• paid by: Buyer
• method: Money back
• policy: Returns Accepted
• time: 30 Days

shipping aquariumfilterer:

• service: USPS Ground Advantage
• cost: $24.99
• transit: 4-9 Days
• class: Standard
• type: Fixed
• carrier: USPS

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• wallet: Paypal
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general aquariumfilterer:

• Pet Supplies > Fish Aquariums > Filters
• condition: New

offer aquariumfilterer:

• best offers: True
• quantity: 1
• options: Ship-to-home
• started: April 12, 2026
• availability: In Stock
• sold: 0

seller aquariumfilterer:

• # reviews: 1413
• rating: 97.3%
• city: Phoenix, Arizona

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