Description: Material: Aquarium water purification tablets Size: 10cm / 3.90" Color: White Feature: 1. Efficiently purify water quality to keep the aquarium clear and transparent 2. Made of environmentally friendly materials, does not harm the health of fish 3. Convenient and fast, easy to use, reduces the frequency of water changes 4. Long-lasting and economical, saves maintenance costs 5. Multi-functional performance, removes odor and algae, maintains aquatic ecosystem balance Note: 1. Manual measurement may have an error of 1-2cm. Please understand, thank you. 2. Due to the difference between different monitors, the image may not reflect the actual color of the item. Package includes: 1 bottle of aquarium water purification tablets (approximately 100 tablets)