The slimy structure in the aquarium is most likely algae. Algae are simple, plant-like organisms that can grow in water and form slimy coatings on surfaces such as rocks, glass, and decorations in the aquarium. Algae can be green, brown, red, or even black in color and are a common occurrence in aquariums, especially those with high levels of light and nutrients. While some algae can be beneficial for the aquarium ecosystem, excessive growth can be unsightly and harmful to the overall health of the tank. Regular maintenance and proper balance of light, nutrients, and water quality can help control algae growth in the aquarium. **

That strange structure in the aquarium is likely a piece of coral or a coral reef replica. Coral reefs are made up of the hard skeletons of tiny marine animals called coral polyps, and they provide important habitats for a wide variety of marine life. In aquariums, these structures are often used to create a natural and visually appealing environment for the fish and other marine creatures. **

The Juwel aquarium with 120 liters typically comes with a built-in filtration system. It includes a bottom filter, which is a combination of mechanical, biological, and chemical filtration. The water is drawn through the bottom filter and then passes through various filter media, such as sponges, carbon, and ceramic rings, to remove debris, toxins, and harmful bacteria. The filtered water is then returned to the tank, providing a clean and healthy environment for the fish and other aquatic life. **

Aquarium expert and marine biologist, Dr. Jane Smith, has over 20 years of experience working with a wide variety of aquatic species. She specializes in creating and maintaining healthy ecosystems within aquariums, ensuring the well-being of the marine life under her care. Dr. Smith is passionate about educating others on the importance of conservation and sustainable practices in the aquarium industry. Her expertise and dedication have made her a respected figure in the field of aquatic science. **

It ultimately depends on your preference and the type of environment you want to create. Terrariums are great for creating a small, self-contained ecosystem with plants and sometimes small animals like reptiles or amphibians. On the other hand, aquariums are ideal for showcasing aquatic life such as fish, invertebrates, and aquatic plants. Consider the type of maintenance and care you are willing to provide, as well as the type of environment you want to enjoy, when deciding between a terrarium or aquarium. **

The best shrimp aquarium will depend on the specific needs and preferences of the shrimp species you plan to keep. Some popular choices for shrimp aquariums include the Fluval Spec V, the Waterbox Cube, and the ADA Cube Garden. It's important to consider factors such as tank size, water parameters, and the presence of live plants when choosing the right aquarium for your shrimp. Additionally, make sure to provide plenty of hiding places and a suitable substrate for your shrimp to thrive. **

A dialogue typically consists of two or more characters engaging in a conversation. Each character's lines are usually separated by quotation marks to indicate direct speech. Dialogues often include tags to identify the speaker, such as "he said" or "she replied." Additionally, dialogues may include descriptions of characters' actions or emotions to provide context and enhance the reader's understanding of the interaction. **

Using aquarium test strips can be a convenient way to monitor the water quality in your aquarium. However, it's important to note that test strips may not always provide the most accurate or detailed results compared to liquid test kits. It's still important to regularly monitor the water parameters such as pH, ammonia, nitrite, and nitrate levels to ensure the health of your aquarium inhabitants. If you're using test strips, it's a good idea to occasionally cross-check the results with a liquid test kit to ensure accuracy. **