1/3/5Pcs Circle Shaped Natural Volcanic Rock Aquarium Filter Media Supports Efficient Biological Filtration

Description: 1/3/5Pcs Circle Shaped Natural Volcanic Rock Aquarium Filter Media Supports Efficient Biological Filtration And Stable Water Quality For Freshwater & Saltwater Aquatic Tanks Features: 1. Volcanic rock with massive interconnected micropores provides large colonization area for beneficial nitrifying bacteria, effectively breaks down harmful ammonia, nitrite and residual organic waste in water, keeps aquarium water clear and greatly reduces the frequency of water changes for fish keepers. 2. Volcanic rock is rich in mineral trace elements, which can slowly release beneficial nutrients to the water body and maintain a stable pH value without sudden fluctuations, creates a healthy and suitable living environment for various fish, shrimps and aquatic plants to support their normal growth. 3. High-density volcanic rock features extremely stable physical and chemical properties, will not crumble, powderize or release harmful substances after long-term immersion in water, can be reused after simple rinsing, saves long-term filter media replacement cost for users. 4. The porous internal structure of volcanic rock allows water flow to pass through smoothly without clogging the filter chamber, effectively improves the overall operation efficiency of the aquarium filtration system, guarantees consistent and reliable filtering effect during long-term use. 5. Special Circle structure allows these volcanic rock pieces to be stacked stably with even gaps between each unit, fully utilizes the internal space of the filter bin and ensures even water distribution across the filter layer, maximizes the filtration efficiency per unit volume of filter media. Specifications: Category: Aquarium Filter Media Material: Volcanic Rock Size: As the picture show Color: Reddish Brown Application: Suitable for all kinds of aquarium filtration systems including canister filters, trickle filters, sump tanks, upper filters, works for both freshwater and saltwater fish tanks, shrimp tanks and aquatic plant tanks Quantity : 1/3/5Pcs Note: 1. Please allow differences due to manual measurement, thanks. 2. Due to the difference between different monitors, the image may not reflect the actual color of the item. The merchant warrants that their products comply with all applicable laws, and are offered only if they comply with Joom's policies and EU Product Safety and Compliance laws.