FEATURES 1. Thoughtfully crafted based on human ergonomic principles. 2. Fully sealed and equipped with a robust magnetic pull. 3. Effortlessly removes dirt from the glass surface of your aquarium. DIRECTIONS 1. Position the half with the Velcro scrubbing pad inside the aquarium and align it with the other half featuring the felt pad on the outside. 2. Exercise care when handling magnets, as they possess a very strong magnetic attraction. Keep them out of reach of children. L - 11x6x5cm M - 8x4x4.5 cm S - 6x2.5x4.5 cm

Helps you easily keep track of nitrate levels in both fresh and saltwater Nitrate (NO3) serves as a key indicator of significant organic pollution. It's crucial to address the source of this pollution, and performing a partial water change can offer immediate relief. Over time, using sera siporax Professional can help prevent nitrate build-up. Enough for approximately 60 measurements. Usage Information:  https://www.sera.de/fileadmin/user_upload/manuals/sourcefiles/42994_42995_42996_-INT-_sera-nitrat-test_05-2018.pdf

The bluish glow of the cliff Approximately 18,000 – 22,000 Kelvin, based on the dimmer adjustment Enhances the fluorescent appearance in marine aquariums Ideal for supplementary lighting in Malawi aquariums or as moonlight Facilitates the simulation of sunrise and sunset with the sera LED Digital Dimmer Compatible with both freshwater and marine aquariums Blue actinic light is perfect for promoting algal endosymbiosis in both soft and hard corals, as well as other invertebrates. The blue LED spectrum has been broadened by using two distinct LEDs, ensuring that the correct wavelengths of light are provided for the photosynthesis process. This light is also beneficial for enhancing color and depth as additional lighting in the Malawi aquarium or as moonlight. The recommended pairing is with the LED X-Change Tube neutral brilliant white or the LED X-Change Tube daylight sunrise. When paired with the sera LED Digital Dimmer, the light intensity of the sera LED X-Change Tube marine blue sunrise can be adjusted. Furthermore, it allows for the simulation of sunrise and sunset at customized times.

This product is designed to measure the magnesium concentration in a marine aquarium. Warning! Reagent 1 contains sodium hydroxide, which can cause severe burns. Ensure that the reagent is stored securely out of children's reach. Always wear protective gloves while handling. If it contacts your eyes, rinse immediately with water and seek medical attention. If you experience any nausea, consult a doctor and bring this manual with you. A proper magnesium concentration is essential for the health of marine invertebrates and algae, such as red calcareous algae, which utilize significant amounts of magnesium to form their skeletons. Natural seawater typically has a magnesium concentration of around 1300 mg/l. To maintain optimal conditions in your marine aquarium, this level must be achieved. The Sera magnesium test provides a quick and easy way to measure magnesium concentration in your aquarium. You can also easily increase magnesium levels using Sera magnesium plus. Boost magnesium levels with Sera Marin COMPONENT 6 magnesium. The amount of reagent used will depend on the calcium level in the water being tested. How to Use: Instructions for use Maintaining an optimal magnesium level in a marine aquarium is crucial for the well-being of invertebrates and decorative algae. For instance, red calcareous algae require a substantial amount of magnesium for their skeletal structure. The natural concentration in marine water is approximately 1,300 mg/l, which should also be replicated in your aquarium. The Sera magnesium test enables you to quickly and easily check the magnesium levels. If you have prior testing experience with the Sera calcium test, this process will be even simpler. You can effortlessly enhance the magnesium levels in your marine aquarium by adding Sera Marin COMPONENT 6 magnesium. Usage Instructions: Shake the reagent bottles thoroughly before use! Avoid contact between the tested water and the aquarium or pond water!  1. Rinse the measurement vial several times with the water you wish to test, then discard the water. Dry the outside of the vial.  2. Rinse the syringe multiple times with the water to be tested, then draw 2 ml into the syringe and transfer it into the vial. 3. Add 6 drops of reagent 1 and shake the vial until the mixture is uniform. Any cloudiness that appears will not impact the results. 4. Introduce one level scoop (included in the kit) of reagent 2 into the vial and gently swirl (do not shake) until the powder is fully dissolved. 5. Gradually add reagent 3 drop by drop, counting each drop. Release pressure on the reagent bottle after every 5 drops to allow air to enter. Shake the vial after each drop until the color shifts from pink to blue (not violet) and remains stable for at least 30 seconds while gently swirling the vial. Record the number of drops used. 6. Discard the contents of the measurement vial, rinse it thoroughly with tap water, and then rinse it several times with the water to be tested before emptying it again. Dry the outside of the vial. 7. Use the syringe to take up 2 ml of the water to be tested and transfer it into the vial.  8. Add 6 drops of reagent 4 and shake the vial until the liquid is evenly mixed. Any cloudiness that occurs will not affect the test.  9. Introduce one level scoop (included in the kit) of reagent 5 into the vial and gently swirl (do not shake) until the powder is fully dissolved. 10. Add reagent 3 drop by drop, counting each drop. Release pressure on the reagent bottle after every 5 drops to allow air to enter. Shake the vial after each drop until the color changes from red to green and remains stable for at least 30 seconds while occasionally swirling the vial. Note – you will require significantly more drops for this measurement than for the initial one! 11. To determine the magnesium level, subtract the number of drops used in the first measurement from the total used in the second measurement. Multiply the remaining number of drops by 60 to convert it to mg/l. For example, if the first measurement needed 4 drops and the second needed 24, subtracting gives you 20 drops. Multiplying 20 drops by 60 results in 1,200 mg/l magnesium. 12. Cleaning: Rinse the vial and syringe thoroughly with tap water before and after each test. Immediately close the reagent bottles after use and do not swap caps. Store them at room temperature and away from light. This product is intended for testing ornamental fish aquariums and pond water only. Keep in a cool, dark place!

Introducing the Karis Replacement LED designed specifically for the PF Series. This high-quality LED ensures optimal performance and longevity, making it an essential accessory for your lighting needs.

Boyu Magnetic Cleaner With Thermometer [WD-Series] The Boyu WD-Series Magnetic Scraper is expertly crafted to effortlessly clean aquarium glass (up to 12 mm) without causing any scratches. It features a built-in digital thermometer, allowing you to monitor the temperature throughout the aquarium. When the inner part is detached from the exterior, it floats, making it simple to retrieve from the tank. Available sizes: S : 10.4x4.3x6.2cm M : 11.4x4.7x6.8cm L : 12.85x5.3x7.4cm

The bluish glow of the cliff Approximately 18,000 – 22,000 Kelvin, varying with the dimmer adjustment Boosts the fluorescent effects in marine aquariums Perfect as supplemental lighting in Malawi aquariums or for moonlight effects Allows for the simulation of sunrise and sunset with the sera LED Digital Dimmer Suitable for both freshwater and marine aquariums Blue actinic light is perfect for promoting algal endosymbiosis in both soft and hard corals, as well as other invertebrates. The emitted blue LED spectrum is enhanced using two distinct LEDs, ensuring the right wavelengths for the photosynthesis process. This light is also utilized to enhance color and depth as extra lighting in Malawi aquariums or to create moonlight effects. The ideal pairing is with the LED X-Change Tube neutral brilliant white or LED X-Change Tube daylight sunrise. When paired with the sera LED Digital Dimmer, the brightness of the sera LED X-Change Tube marine blue sunrise can be adjusted. Additionally, both sunrise and sunset can be simulated at customized times.

The expert-designed lights come with numerous features, including high brightness, energy efficiency, minimal depreciation, uniform illumination without spots, safety and stability, straightforward installation, easy upkeep, and environmentally friendly benefits.

Introducing the KW Zone Dolphin Wet/Dry Power Head, a versatile and efficient solution for your aquarium needs. This power head is designed for both wet and dry applications, making it a perfect choice for various filtration systems. Featuring a compact design, the KW Zone Dolphin Power Head offers powerful water movement and optimal circulation, ensuring a healthy environment for your aquatic pets. Its durable construction ensures long-lasting performance, while the easy installation process makes it user-friendly for both beginners and experienced aquarium enthusiasts alike. Versatile Use: Suitable for both wet and dry applications. Powerful Performance: Provides excellent water circulation. Durable Design: Built to withstand the test of time. Easy Installation: Quick and straightforward setup process. Enhance your aquarium's ecosystem with the KW Zone Dolphin Wet/Dry Power Head and ensure your aquatic pets thrive in a well-maintained habitat.

Karis Perfect Internal Submersible Pump High lift & Heavy traffic Silent operation Built to last & Excellent insulation Effective filtration is crucial for an aquarium, as fish require pristine water to thrive in a healthy environment. Filtration can be categorized into biological, mechanical, and chemical processes. This product features a filter sponge that captures impurities and purifies the water. It is perfect for both freshwater and saltwater setups. Fully submersible, it is an excellent choice for any aquarium filtration needs. Completely submerged, it suits both freshwater and marine environments. It operates ultra-quietly, is energy-efficient, and is easy to maintain. *Model: QL-850F Power: 4W Flow: 400L/h Voltage: 220-240V 50-60Hz *Model: QL-950F Power: 6W Flow: 600L/h Voltage: 220-240V 50-60Hz

Compact and simple to set up Effective wave generation for creating dynamic water movement Includes an anti-vibration suction cup for stability Offers full rotation with 100-degree and 360-degree directional flow

FEATURES 1. Thoughtfully crafted with ergonomic principles in mind. 2. Fully enclosed with strong magnetic pull. 3. Effortlessly removes dirt from the glass surface of your aquarium. DIRECTIONS 1. Position one half, featuring the Velcro scrubbing pad, inside the aquarium, and align the other half with the felt pad on the outside. 2. Exercise caution when handling the magnets, as they possess a very strong magnetic force. Keep out of children's reach. L - 11x6x5cm M - 8x4x4.5 cm S - 6x2.5x4.5 cm

This is a SERA replacement part designed for the 5W UV-C lamp. It enables you to easily swap out the UV-C lamp in the SERA Bioactive Wire 250+ UV and SERA Bioactive Wire 400+ UV external filters. The SERA UV-C lamp is supplied with its own sealing ring. Key benefits of the SERA 5W UV-C lamp: - Authentic SERA-CE component compliance documentation- Replacement part for SERA Bioactive Wire 250+ UV- Replacement part for SERA Bioactive Wire 400+ UV

Replacement set includes 1 plastic scraper and 2 sponges designed for the Sera scraper XL and XXL glass cleaner, allowing for quick and effective removal of algae and other debris from your aquarium glass. The Sera scraper XL and XXL glass cleaner is ideal for swiftly and thoroughly eliminating algae and other contaminants from aquarium glass. This set features three distinct, easily interchangeable tools: one stainless steel blade for glass, one plastic blade for acrylic, and a soft-layered sponge, perfect for gentle cleaning of the aquarium's interior. Even stubborn algae can be removed with ease. The Sera cleaner scraper is offered in two sizes: XL: 30cm in length XXL: 60-90cm in length, complete with a short handle