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.

- The sponge filter offers biological filtration, and its air infusion chamber generates tiny bubbles that enhance oxygen solubility. - Achieve sparkling clean water, perfect for small aquariums. - Designed for hassle-free maintenance and convenience. - Suitable for various filtering systems as a prefiltration option. - Made with an eco-friendly high-quality sponge, paired with an air pump. - Promotes the growth of beneficial nitrifying bacteria, ensuring stable water quality and effective oxygen and filtration.

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.

Completely new and of superior quality, non-toxic and visually appealing. These artificial underwater decorations are perfect for enhancing your fish tank aquarium. Featuring a ceramic base and vibrant multi-colored plastic elements, they are effortless to clean. These items offer an ideal hiding spot for your fish. Compatible with both freshwater and saltwater environments. They add a stunning aesthetic to any aquarium and complement aquascaping or other decorative elements beautifully. Transform your aquarium with these gorgeous decorations. Height: 25cm In box: 5 Plants

Color-enhancing food for larger pond fish floating, easy-to-digest sticks featuring 4% krill meal rich in carotenoids for enhanced color vibrancy and clarity of hues well-balanced formula packed with omega fatty acids, vitamins, trace elements, and minerals ideal for complete feeding throughout the year Pond Color is a color-enhancing food composed of gently crafted sticks that contain no artificial colors or preservatives for pond fish. Key ingredients like 4% krill meal, abundant in natural carotenoids, aid in promoting vibrant color and purity. The balanced and easily digestible formula is rich in omega fatty acids, vitamins, trace elements, and minerals, fostering healthy growth, resilience, and vitality. This color-enhancing food is suitable for year-round, complete nutrition. The floating sticks maintain their shape for an extended period without contaminating the water. Complete feed for all ornamental coldwater fish Ingredients Wheat Flour, corn starch, Wheat Gluten, Fish Meal, Dried Black Soldier Fly Larvae, Krill meal, Yeast (dehydrated), Fish oil, Wheat Germ Meal, mannan oligosaccharides, New Zealand Green Mussel, Vitamin C (L-Ascorbyl-2-Polyphosphate), Haematococcus Algae Meal, garlic, Vitamin E (α-Tocopherol Acetate), Vitamin B3 (Niacinamide), Inositol, Vitamin B2 (Riboflavin), Vitamin A (Vitamin A Acetate), Vitamin B1 (Thiamine Hydrochloride), Vitamin B5 (Calcium Pantothenate), Menadione sodium bisulfite complex, Vitamin B6 (Pyridoxine Hydrochloride), Vitamin D3 (Cholecalciferol), Vitamin B9 (Folic Acid). Additives Vitamins and provitamins: Vitamin A (Vitamin A Acetate) 30,000 IU/kg, Vitamin D3 (Cholecalciferol) 1,500 IU/kg, Vitamin E (α-Tocopherol Acetate) 60 mg/kg, Vitamin B1 (Thiamine Hydrochloride) 30 mg/kg, Vitamin B2 (Riboflavin) 90 mg/kg, Vitamin C (L-Ascorbyl-2-Polyphosphate) 550 mg/kg. Analytical Constituents Min. Crude Protein 37.5%, Min. Crude Fat 4.5%, Max. Crude Fiber 3.7%, Max. Moisture 7.0%, Min. Phosphorus 0.6%, Max. Crude Ash 7.0%. Product More Details Natural nutrition for pond fish Whether you have goldfish, bitterlings, or sunbleaks: the sera pond food collection offers the perfect nutrition for all pond fish. Tailored to the size and age of the fish, dietary needs, and specific purposes (like color enhancement), each type features the right composition and form (flakes, sticks, pellets). All food options are part of the "Nature" line and do not include any artificial colors or preservatives. The vibrant hues of the various food types come from natural ingredients. A diverse diet with natural components is the best defense against deficiencies, fostering the health and vitality of your fish. The Nature food varieties incorporate natural elements like spirulina, krill, or sustainable insect meal sourced from soldier fly larvae (Hermetia). Feeding instructions Feed once or twice daily throughout the year, providing only as much as the fish can consume in a short period.    

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

Sera Plant Color T8 Fluorescent Aquarium Lamp 25 Watt A vibrant red-blue light designed to promote healthy plant growth in both aquariums and terrariums 4900 Kelvin Brings out the vivid colors of fish and plants Adds an exotic ambiance to your aquarium Boosts photosynthesis for robust plant development 75 cm  

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.

UVC water clarifier for ponds exceeding 10,000 liters (2,642 US gal.)The sera Pond UVC-55X delivers consistently clear and biologically balanced pond water. It effectively eliminates various types of floating algae (resulting in cloudy green water), curbs the growth of thread and other algae, and significantly reduces pathogens and bacterial cloudiness by up to 97%. This UVC device features a corrosion-resistant stainless steel body that not only ensures durability but also reflects UVC radiation, enhancing its effectiveness by as much as 35%. The amalgam UVC lamp boasts a lifespan that is extended by up to 42% and offers superior performance (over 52%) compared to conventional UVC lamps. The unit can be easily attached to filters or prefilter chambers using the provided lead-through connectors, and it is also compatible with direct connections to a pond pump. Included are 90° water intake connectors for 25 and 32 mm (1" and 1.25") hoses, along with adjustable hose connectors for 20, 25, 32, and 40 mm (0.78", 1", 1.25", and 1.58") hoses. The sera Pond UVC-55X system comes with a 10 m (11 yd.) cable. Usage Information https://www.sera.de/fileadmin/user_upload/manuals/sourcefiles/4001942522328_45530-_INT-_sera_pond_UVC-55X_08-2019.pdf

Flakes for Goldfish: Promoting Growth and Vibrant Colors sera Goldy Nature serves as the primary nourishment for smaller goldfish and their ornate varieties, including shubunkin, veiltail, or sarasa, as well as other coldwater fish, all without the use of artificial colors or preservatives. This formula includes insect meal, providing a top-notch protein source that is also environmentally friendly. The thoughtfully balanced mix of plant-based and animal ingredients guarantees a highly digestible food that supports both the health and vibrant colors of your fish. These flakes maintain their structure, are ideal for surface-feeding coldwater fish, and do not cloud the aquarium water. Complete Nutrition for All Goldfish Ingredients Fish Meal, Wheat Flour, Dehydrated Brewer's Yeast, Hermetia (5%), Calcium Caseinate, Sun-Dried Freshwater Shrimp (Gammarus pulex), Spirulina, Brown Algae (Kelp), Mannan Oligosaccharides, Fish Cod Liver Oil (with 34% omega fatty acids), Herbs, Alfalfa Herb, Stinging Nettle, Parsley, Green-Lipped Mussel, Paprika, Spinach, Carrots, Haematococcus Algae, Garlic. Additives Vitamins and Provitamins: Vit. A 16,800 IU/lb, Vit. D3 820 IU/lb, Vit. E (D, L-α-tocopheryl acetate) 54 IU/lb, Vit. B1 16 mg/lb, Vit. B2 41 mg/lb, Stabilized Vit. C (L-ascorbyl monophosphate) 250 mg/lb. Nutritional Analysis Min. Crude Protein 45.3%, Min. Crude Fat 7.2%, Max. Crude Fiber 4.6%, Max. Moisture 6.0%, Max. Crude Ash 11.5%. Additional Product Information Natural Diet for Ornamental Fish This product is part of the "sera Nature" range, which excludes any artificial dyes or preservatives. A diverse diet featuring ingredients that are close to nature is the best defense against nutritional deficiencies, promoting the health and vitality of your fish. Therefore, the Nature food types include natural components such as Spirulina, Krill, or sustainable insect meal sourced from soldier fly larvae (Hermetia). The labels on the packaging emphasize these ingredients and their proportions in the food. Feeding Instructions Feed your fish once or twice daily throughout the year, providing only as much food as they can consume within a brief period.

Herbal water conditioner for decorative fish against Ichthyophthirius multifiliis and other single-celled skin parasites The herbal water conditioner sera Phyto med Protazid features potent quinine (as hydrochloride) derived from cinchona bark, serving as an effective treatment. This water conditioner is suitable for addressing white spot disease in both freshwater and marine fish, as well as combating other single-celled skin parasites like Ichthyobodo sp., Chilodonella sp., and Piscinoodinium pillulare in freshwater environments. Ornamental fish in saltwater impacted by velvet disease can also be effectively treated with sera Phyto med Protazid. sera Phyto med Protazid is well tolerated by ornamental fish in both freshwater and marine settings. However, it is not suitable for invertebrates and algae. If necessary, treat affected fish in a quarantine tank. Usage Information https://www.sera.de/fileadmin/user_upload/manuals/sourcefiles/45390_45349_-INT-_sera-phyto-med-protazid_02-2019.pdf