Penn-Plax Undergravel Aquarium Filter for 10 Gallon Tanks Two 9.5 x 9.5 Plates Under Gravel System for Clear, Clean Water Safe for Freshwater and
DKK 193
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Cycle crystal clear water with less moving parts for easy maintenance.
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Product Details
- NOTHING LIKE OLD SCHOOL: The Clear-Free Premium Under Gravel Filter is air driven and utilizes an Air Pump (not included) to cycle crystal clear water throughout your aquarium, while keeping a crisp and neat look inside. This means there’s less “moving parts, making for simplistic and easy maintenance. This filter is suitable for most 10 gallon aquariums.
- BIOLOGICAL, CHEMICAL, AND PHYSICAL FILTRATION: As air is pushed through the Air Stones and rises through the Lift Tubes, water is gently suctioned through gravel and the filter plates, allowing both air and water to pass through the Filt-a-Carb Activated Carbon Cartridges. When water continues to be drawn through, anaerobic bacteria collects and colonizes within the gravel and filter plates.
- ALSO AERATES YOUR TANK: Since the Clear-Free Premium Under Gravel Filter is air driven through the use of Air Stones and an Air Pump (not included), it also aerates your tank. In essence, your aquarium is being filtered and aerated at the same time, though the same system. It’s a filter and bubbler in 1.
- ITEMS INCLUDED: The Clear-Free Premium Under Gravel Filter includes 2 Filter Plates (color of plates may vary), 2 Adjustable Lift Tubes, 2 Straight Airline Tubes, 3 Filter Plate Connecters, and 2 Replaceable Filt-a-Carb Activated Carbon Media Cartridges.
- MEASUREMENTS: Each Filter Plate Separately = 9.5 (W) x 9.5 (D) / Filter Plates Together = 19 (W) x 9.5 (D) / Each Lift Tube at Filter Plate Base = 9.75 – 12.75
| Item Weight | 12.8 ounces (362.88 grams) |
| Manufacturer | Penn Plax, INC. |
| Item model number | CFU10 |
| Date First Available | January 23, 2008 |
| Item Package Dimensions L x W x H | 9.69 x 9.57 x 1.54 inches (24.6 x 24.3 x 3.9 cm) |
| Item Dimensions LxWxH | 9.5 x 1.25 x 10.25 inches (24.1 x 3.2 x 26 cm) |
| Item Weight | 0.8 Pounds (360 grams) |
| Brand Name | Penn-Plax |
| Target Audience Keyword | algae-eaters, arachnids, arthropods, bats-animals, bearded-dragons, bees, beetles, betta-fish, bottom-feeder-fish, butterflies, cichlid-fish, crabs, dragonflies, fish, frogs, geckos, goldfish, hermit-crabs, iguanas, insects, invertebrate-fish, ladybugs, lizards, mollusks, newts, octopuses, rays, reptiles, salamanders, sharks, snails, snakes, spiders, tortoises, turtles |
| Directions | Wash with warm water before placing in aquarium. |
| Model Name | CFU10 |
| Color | Blue |
| Size | 10 Gallons |
| Age Range Description | All Life Stages |
| Number of Items | 1 |
| Style | 10 Gallon |
| Included Components | 2 Filter Plates, 2 Adjustable Lift Tubes, 2 Straight Airline Tubes, 3 Filter Plate Connecters, and 2 Replaceable Filt-a-Carb Activated Carbon Media Cartridges |
| Specific Uses for Product | Indoor |
Who Should Buy?
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Freshwater Fish Keepers
Ideal for maintaining water quality in freshwater aquariums, enhancing circulation and oxygenation in the substrate.
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Budget-Conscious Users
A cost-effective filtration solution for users who desire quality filtration without a significant financial investment.
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Beginner Aquarists
Great for novice aquarium owners needing a simple and effective filtration system that requires minimal maintenance.
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Saltwater Enthusiasts
Not suitable for saltwater tanks, as it may not handle the specific demands of marine environments effectively.
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High Bioload Tanks
May struggle to maintain optimal water quality in heavily stocked aquariums due to limited filtration capacity.
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Aquascaping Hobbyists
Potentially disruptive to elaborate substrate designs, which may be a concern for those focused on aesthetic arrangements.
Product Description
Customer Questions & Answers
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Question:
What is the purpose of the Penn-Plax Undergravel Aquarium Filter?
Answer: The Penn-Plax Undergravel Aquarium Filter is designed to provide efficient biological filtration in aquariums ranging from 15 to 20 gallons. By utilizing an undergravel system, it helps maintain clear and clean water by allowing beneficial bacteria to grow in the substrate, which breaks down harmful waste products. This method supports healthier fish and plant life by ensuring a stable environment. It's particularly useful for hobbyists who maintain freshwater aquariums as it effectively handles the biological load. -
Question:
How does the undergravel filtration system work?
Answer: The undergravel filtration system works by drawing water through the substrate using air stones or a powerhead. As water circulates beneath the gravel, it passes through beneficial bacteria that naturally filter out impurities. The system creates a healthy ecosystem, as these bacteria consume waste products, keeping your aquarium clean and improving overall water quality. Regular maintenance, like changing the substrate layer, ensures optimal performance and efficacy of the filter. -
Question:
Can this filter be used for planted aquariums?
Answer: Yes, the Penn-Plax Undergravel Aquarium Filter can be effectively used in planted aquariums. The system promotes the growth of beneficial bacteria and enhances oxygen levels in the substrate, which is advantageous for plant roots. The filter supports a natural ecosystem, allowing plants to thrive while keeping the water clear and healthy. Additionally, it can accommodate various substrate types suitable for planted tanks. -
Question:
What size tanks is this filter suitable for?
Answer: This filter is specifically designed for aquariums ranging from 15 to 20 gallons. With its two plates measuring 11.2” x 11.25”, it is ideal for various tank configurations within this size range. This flexibility allows aquarists to manage tank setups effectively while ensuring filtration is adequate for the volume of water and the number of fish present in the tank. -
Question:
Is the Penn-Plax Undergravel Filter suitable for saltwater tanks?
Answer: While the Penn-Plax Undergravel Filter is primarily marketed for freshwater aquariums, it can also be used in saltwater tanks with some considerations. The beneficial bacteria that thrive in the undergravel system can help maintain stabile water conditions in saltwater setups. However, ensure proper monitoring of salt levels and biogeochemical parameters, as saltwater systems can have different needs than freshwater tanks. -
Question:
How often should I clean the undergravel filter?
Answer: It is recommended to clean the undergravel filter periodically, particularly during water changes. This often involves siphoning debris from the surface of the substrate while avoiding disturbance of the beneficial bacteria below. Regular maintenance will help to prevent clogging and maintain optimal performance of the filtration system. A schedule of every few weeks is typically sufficient to keep the system running efficiently. -
Question:
Can the filter be used in combination with other filtration systems?
Answer: Yes, the Penn-Plax Undergravel Aquarium Filter works well alongside other filtration systems. Many aquarists pair undergravel filters with hang-on-back or canister filters to enhance overall filtration and flow rates. This combination allows for better water quality control while utilizing the biological filtration benefits of the undergravel system. Using multiple filters can also provide a more diverse range of mechanical and chemical filtration. -
Question:
What kind of maintenance does this filter require?
Answer: The primary maintenance for the Penn-Plax Undergravel Filter involves ensuring the substrate remains clean and the filter plates are clear of debris. During routine water changes, you can use a gravel vacuum to remove waste without disturbing the beneficial bacteria. Checking for any blockages in the aeration system is also crucial. Regular monitoring allows you to catch potential issues early and maintain a healthy aquarium environment. -
Question:
Where can I buy the Penn-Plax Undergravel Aquarium Filter in Faroe Islands?
Answer: You can purchase the Penn-Plax Undergravel Aquarium Filter from Ubuy in Faroe Islands. Ubuy offers a convenient online shopping experience, providing a variety of aquarium products, ensuring you receive quality items directly to your door. Whether you're a beginner or an experienced aquarist, Ubuy makes it easy to find the filter you need for your 15-20 gallon tank setup. -
Question:
What is the best substrate to use with an undergravel filter?
Answer: The best substrate for use with an undergravel filter is typically a medium to fine gravel that allows for adequate water flow while providing a surface for beneficial bacteria colonization. A substrate of 1-2 inches is ideal, ensuring it is heavy enough to stay in place but porous enough to allow water to pass through. Natural gravel or specialized aquarium substrates can work effectively, supporting both aesthetic and functional aspects of the aquarium.
Penn-Plax Filter Accessories CFU10 Editorial Review
The Penn-Plax Undergravel Aquarium Filter has garnered a favorable reception among users, particularly for its efficacy, affordability, and ease of integration into existing tank setups. Many customers appreciate the additional filtration it provides, particularly for larger tanks filled with goldfish and other species, complimenting its ability to maintain water oxygenation and cleanliness. The filter's design allows it to blend seamlessly with the substrate, making it visually unobtrusive once installed. While the product excels in functionality, some users note that the plastic materials feel somewhat cheap and may not offer the highest durability. The clips that hold the four plastic trays together have been a recurring point of frustration, with many users stating they are too loose and prone to detachment, which can complicate setup. Additionally, the filter may fall short in dimensions for certain tank sizes, requiring careful Consideration of measurements before purchase. Despite these minor drawbacks, the filter is praised for its overall quality and effectiveness, with many longtime aquarium enthusiasts noting it compares favorably to other filtration types. It provides an innovative solution for maintaining the biological balance of the aquarium while allowing for easy modifications by experienced users. **
Customer Reviews & Ratings
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5 Star
69%
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4 Star
14%
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3 Star
9%
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2 Star
3%
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1 Star
5%
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Pros
- Effective water filtration and oxygenation
- Affordable price point
- Fits well under substrate, remaining unobtrusive
- Lightweight and easy to handle
- Comes with multiple filter tubes
Cons
- Plastic materials may feel cheap and less durable
Product Price History
Important information
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DKK 193
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Features & Benefits
- Designed for 40-55 gallon tanks, ensuring optimal performance.
- Utilizes an air pump for efficient water cycling and filtration.
- Durable, clear, and flexible airline tubing resists kinking.
- Includes all necessary components: filter plates, lift tubes, and carbon cartridges.
- Aerates water effectively while providing superior filtration.
- Easy maintenance with fewer moving parts for stress-free tank care.
















