Stability and Assurance It establishes a buffer and maintains the pH level It helps combat biogenic scaling Creates optimal conditions for specific species (e.g. African Cichlids) Carbonate hardness (KH) is among the less critical factors of aquarium water quality. The majority of fish in freshwater aquariums prefer somewhat harder water. Furthermore, KH serves as a buffer that shields against harmful pH fluctuations (including sudden increases in acidity). For all community aquariums, it's essential to maintain a minimum KH of 6°dkH (even higher for particular species like African Cichlids). This helps ensure the health of the fish and keeps the aquarium water stable and manageable. Sera KH/pH-plus effectively raises KH to the desired level over the long term. The pH will gradually increase and, most importantly, remain securely stabilized.

Featuring Bacillus subtilis for robust, healthy Koi Revolutionary specialized food designed for the year-round nourishment of Koi measuring 15 cm and above, in water temperatures exceeding 8°C. This co-extruded granulate boasts a blend of sera’s standard natural functional ingredients, including MOS, Beta-glucans, Haematococcus, Spirulina, and more, along with the probiotic Bacillus subtilis, which helps maintain a balanced intestinal flora in fish. This support enhances their overall health and optimizes feed efficiency. As a result, Koi flourish rapidly and evenly, experience fewer health issues, and contribute to a less stressed aquatic environment. Koi All Seasons Probiotic represents another exceptional advancement from sera in Koi nutrition. This premium Koi food incorporates the intestinal flora stabilizer Bacillus subtilis, which has been approved for ornamental fish since June 2016 and is specifically endorsed by the EFSA (European Food Safety Authority) to enhance growth and feed efficiency in ornamental fish diets. The improved feed efficiency promotes swift and well-rounded growth and long-term health for the fish. Well-nourished fish are less prone to illness, and the waste produced, which can be harmful to fish and promote algae growth, is significantly reduced. To reap these beneficial effects, this specialized feed should be utilized throughout the year (when water temperatures are above 8°C) at least once a week as a substitute for the relevant seasonal feed. It also serves as an excellent foundational diet.

Nourishing and immune-boosting food for Koi, designed for feeding throughout the year floating pellets featuring a unique ring and core structure enriched with probiotic active bacteria to enhance and stabilize intestinal flora promotes health and optimizes feed utilization Koi develop robust health, build a strong immune system, and contribute to cleaner water high in protein for optimal growth Probiotics are now recognized beyond yogurts or dietary supplements for humans—they have become an essential part of ornamental fish nutrition. Since 2016, the intestinal flora stabilizer Bacillus velezensis (previously known as B. subtilis) has been approved for inclusion in ornamental fish feed, receiving explicit endorsement from the EFSA (European Food Safety Authority) to enhance growth and feed efficiency. sera was the pioneer to respond swiftly in 2016 by introducing an innovative probiotic koi food: “Koi All Seasons Probiotic.” As part of the brand's rebranding initiative, the name was updated to “Koi Professional Probiotic.” Koi Professional Probiotic is ideal for year-round feeding of koi when water temperatures exceed 8 °C. The specially co-extruded granules include not only the natural, functional components that are typical of sera, such as MOS, beta-glucans, Haematococcus algae, spirulina, and more, but also the probiotic Bacillus velezensis, which supports the fish's intestinal flora. This enhances their overall health and boosts feed efficiency. As a result, koi grow rapidly and uniformly, while the water remains less polluted by harmful waste and algae-promoting substances. To reap these benefits throughout the year, this specialized food should replace seasonal diets several times a week, as long as water temperatures are above 8 °C. It also serves excellently as a primary food source. Koi Professional line Within the Koi Professional line, sera provides high-quality food options tailored to the unique needs of cold-blooded fish during various seasons (spring & fall, summer, winter). Additionally, there are two functional food options, Koi Professional Color and Probiotic, which are suitable for year-round feeding. Koi Professional Junior has been specifically formulated to cater to the dietary requirements of young Koi. Ingredients Fish meal, corn starch, wheat flour, wheat gluten, fish oil (4%), krill oil (3%), spirulina, brewer's yeast, wheat germ, Ca-caseinate, mannan oligosaccharides (0.4%), krill meal, gammarus meal, green-lipped mussel meat meal, nettle, alfalfa, Haematococcus algae, parsley, seaweed meal, peppers, spinach, carrots, garlic, fenugreek seeds, fennel seeds, aniseed. Nutritional Analysis Crude protein 40.0%, crude fat 8.5%, crude fiber 2.0%, moisture 6.0%, crude ash 7.5%. Additives Vitamins and provitamins: 3a672a/vit. A 37,000 IU/kg, 3a671/vit. D 3 1,800 IU/kg, 3a700/vit. E 120 mg/kg, 3a820/vit. B 1 35 mg/kg, 3a825i/vit. B 2 90 mg/kg, 3a312/stab. Vitamin C 550 mg/kg. Intestinal flora stabilizer: 1x10 10  CFU/kg 4b1820 Bacillus velezensis DSM 15544. Recommended For Complete diet for all Koi

Water Testing for Seasoned Pond Enthusiasts Seasoned pond enthusiasts routinely monitor their pond water. This proactive approach enables them to address issues, such as algae growth, swiftly and effectively, without resorting to chemicals. The sera Koi aqua-test box includes the following testing kits: pH level total hardness (GH) carbonate hardness (KH) ammonium/ammonia (NH4/NH3) nitrite (NO2) nitrate (NO3) phosphate (PO4) iron (Fe) and copper (Cu)  

Boost your fish's vitality with extra vitamins complementary feed crafted from an emulsified multivitamin concentrate enhances the Koi diet by providing all essential vitamins fills potential nutritional gaps and helps avoid deficiencies supports the immune system and overall health of your fish ideal for use in stressful situations, during illness, and throughout spawning Koi Vitamin Mix is a complementary feed designed with a carefully blended, emulsified multivitamin concentrate specifically for Koi and other pond fish. This product effectively and safely enriches their diet with all the vital vitamins. It addresses potential nutritional deficiencies when simply added to the food. The fish's health, liveliness, and resistance to disease are significantly improved. Especially beneficial during stressful times, when dealing with illness, for young fish, and while supporting spawning. Complementary feed suitable for all Koi Ingredients water (86%), vitamin blend (14%). Additives Nutritional additives: 3a672a/Vit. A 500,000 IU/L, 3a671/Vit. D3 100,000 IU/L, 3a700/Vit. E 5,000 mg/L, 3a820/Vit. B1 2,000 mg/L, 3a826/Vit. B2 1,600 mg/L, 3a831/Vit. B6 2,000 mg/L, 3a835/Vit. B12 2 mg/L, 3a312/stab. Vit. C 55,000 mg/L, 3a711/Vit. K3 510 mg/L, 3a841/calcium-D-pantothenate 5,000 mg/L, 3a316/folic acid 480 mg/L, 3a315/niacinamide 9,500 mg/L, 3a900/Inositol 9,700 mg/L, L-Lysine monohydrochloride 2,300 mg/L. Technological additives: preservatives. Product More Details High-quality, natural nutrition for Koi Nutritious options – with sera Koi food: including staple and color food (Koi Royal & Color) for Koi of all sizes, as well as treats like Koi Silkworm and high-energy summer food (Koi Pellets). All food types are free from artificial colors and preservatives, part of the sera "Nature" range. The multivitamin concentrate Koi Vitamin was specially formulated for Koi needing an extra boost of vitamins (for example, during stress or illness).

High-performance pond filter suitable for ponds up to 40,000 liters (10,568 US gal.) or Koi ponds up to 24,000 liters (6,340 US gal.) The sera Koi Professional 24000 Pond Filter combines cutting-edge functionality with stylish design. It efficiently cleans ponds of up to 40,000 liters (10,568 US gal.) and Koi ponds up to 24,000 liters (6,340 US gal.), all while saving space. Designed with the latest advancements in flow technology, it also boasts an eye-catching exterior. The filtration process consists of four purification stages: initially, the water is treated with UV-C radiation to reduce pathogens and algae. It then flows into a detention chamber, leading to the mechanical filtration stage, which features a curved stainless steel split sieve with a 200 µm mesh size. This effectively captures not only larger debris but also the algae cells that have been treated and blocked by the UV-C light. When there is a risk of algae bloom (“green water”), two fine mesh filter sponges can be easily added beneath the split sieve to capture even single-celled algae from the pond water. If the sponges aren’t cleaned promptly, the water will bypass them and flow directly into the biological stage through a safety overflow. Here, the water is first distributed over a Matala mat, enriched with oxygen, and trickles over the high-performance filter medium, sera siporax pond, colonized by beneficial filter bacteria. The cleansed water is then returned to the pond through a detention step. Included Equipment: Basic version (item no. 08651) 1 filter body 30 l/3 x 2 kg (3 x 4.4 lb.) sera siporax pond 1 Matala mat Equipment version with pump (item no. 08650) same as basic version 2 sera pond pumps PP 12000 (energy-efficient and powerful feed pump with a sleek basket design) 25 m (27.5 yd.) sera pond hose (Ø 32 mm/1¼") Equipment version with UV-C System (item no. 08653) same as basic version 2 sera pond UV-C Systems 55 W Equipment version with pump and UV-C System (item no. 08652) same as basic version 2 sera pond pumps PP 12000 (energy-efficient and powerful feed pump with a sleek basket design) 25 m (27.5 yd.) sera pond hose (Ø 32 mm/1¼") 2 sera pond UV-C Systems 55 W Available in anthracite and granite colors.

Nutritional formula for vibrant colors and healthy development floating granules formed with a ring and a core featuring a high content of pigment-rich spirulina and Haematococcus algae abundant in astaxanthin to create exceptional color depth along with distinct color zone separation and preventing yellowing of white patterns delivers a luxurious shine with an ideal amino acid balance for optimal growth Proper nutrition is essential for enhancing the stunning colors of Koi. A sufficient amount of spirulina microalgae in the diet helps in color saturation and intensification, as well as ensuring clear distinctions between color zones. White areas remain bright without an unpleasant yellow hue. Spirulina boasts over 50% protein content, contains all essential amino acids, and is rich in various unsaturated fatty acids. Additionally, algae provide numerous vitamins and minerals. For instance, astaxanthin enhances coloration, particularly in red areas. Astaxanthin is a vitamin-like pigment that boosts the immune system, acts as an antioxidant, and supports reproductive health. Only the natural, highly bioavailable form of astaxanthin is incorporated into sera feed, primarily sourced from Haematococcus algae (60.5 mg of astaxanthin per kg of feed). However, other ingredients like krill and spirulina also contribute to the supply of astaxanthin and other vital pigments. Koi Professional Color is made up of two parts: a feeding ring and a feeding core. This is achieved through a unique co-extrusion process that allows for the combination of differently processed components. The ring is packed with high-quality natural ingredients such as spirulina and Haematococcus, ensuring exceptional colors and appropriate nutrition. The core includes essential vitamins, minerals, and trace elements necessary for robust growth and a healthy immune system. Colored feed can be provided throughout the year when water temperatures exceed 8°C. Complete feed suitable for all Koi Ingredients fish meal, corn starch, wheat flour, wheat gluten, spirulina (6.3%), wheat germ, brewer's yeast, fish oil, Mannan-oligosaccharide (0.4%), Haematococcus algae, krill meal, nettles, alfalfa, green-lipped mussel meat meal, seaweed meal, paprika, parsley, spinach, carotene, garlic, fenugreek seeds, fennel seeds, anise seeds. Additives Vitamins and provitamins:  3a672a/vit. A 37,000 IU/kg, 3a671/vit. D 3  1,800 IU/kg, 3a700/vit. E 120 mg/kg, 3a820/vit. B 1  35 mg/kg, 3a825i/vit. B 2  90 mg/kg, 3a312/stab. vitamin C 550 mg/kg. Analytical Constituents protein 38.0%, fat 10.0%, fiber 2.5%, moisture 6.0%, ash 7.0%. Recommended For Koi Fish

Water conditioner designed for Koi-friendly environments, enriched with essential minerals Instantly eliminates chlorine and chloramines Neutralizes heavy metals With essential mineral componentssera KOI PROTECT efficiently adapts any water to meet the specific needs of Koi and other decorative pond fish. It swiftly and effectively removes chlorine and chloramines, detoxifies heavy metals, and guards against harmful ammonia pollution. Additionally, it enriches the water with vital minerals in a form that is easily absorbed, which greatly benefits Koi: Calcium for a robust, well-formed skeleton and pristine scales Magnesium for optimal growth and muscle development Manganese to support healthy growth and enhance fertility Iodine for balanced growth and improved resistance to diseases By doing so, KOI PROTECT provides the best possible living conditions for Koi and other ornamental pond fish. Water maintenance 1. Stabilize water 2. Treat water 3. Establish balance 4. Activate filter media sera bio balance sera KOI PROTECT sera bio nitirivec sera filter biostart

Essential nutrition for the healthy growth of Koi measuring up to 12 cm (5 in). floating, highly stable granules perfect for small Koi encourages balanced growth, a robust immune system, and optimal development easily digestible due to a balanced carbohydrate/protein ratio ideal for complete feeding all year round Koi Royal Mini serves as a primary food source made from carefully processed granules free from dyes and preservatives. Rich in beneficial components like omega fatty acids and immune-boosting mannan oligosaccharides, this food aids in healthy growth and resistance against diseases. A 4% inclusion of sustainably sourced insect meal rounds out the thoughtfully selected ingredients. Thanks to its well-balanced carbohydrate/protein ratio, it is very easy to digest and suitable for feeding throughout the year. The dietary needs of Koi are effectively met. The floating granules maintain their shape exceptionally well, minimizing water pollution. Complete nutrition for all Koi Ingredients fish meal, corn starch, wheat flour, wheat gluten, insect meal (Hermetia illucens) (4%), fish oil, brewers yeast, mannan oligosaccharides (0.7%), green-lipped mussel meat meal, garlic, Haematococcus algae. Additives Vitamins and provitamins: 3a672a/Vit. A 14,400 IU/kg, 3a671/Vit. D3 1,800 IU/kg, 3a700/Vit. E 180 mg/kg, 3a820/Vit. B1 18 mg/kg, 3a825i/Vit. B2 18 mg/kg, 3a312/stab. Vit. C 180 mg/kg. Analytical Constituents Crude Protein 36.0%, Crude Fat 9.0%, Crude Fiber 2.5%, Moisture 6.0%, Crude Ash 7.0%. Product More Details  Premium quality, natural food for Koi Complete nutrition with the sera Koi food range: from staple and color-enhancing food (Koi Royal & Color) suitable for small, medium, and large Koi to treats like Koi Silkworm and high-energy summer food (Koi Pellets). All products are free from artificial colors and preservatives, placing them in the sera "Nature" category. The multivitamin supplement Koi Vitamin is specially designed for Koi requiring an additional vitamin boost (such as during stressful times or illness).