Fangrui Product Details Specifications: Name: Water Purifier Cube Weight: 515g 1. Significant Usage Effect Huangshui Kexing: Effectively Purifies Yellow Water And Restores Clear Water Quality. Remove Turbidity: Quickly Eliminate The Problem Of Water Turbidity In The Fish Tank. Eliminate Odors: Remove Fishy Odors From Water And Keep The Air In The Fish Tank Fresh. 2. Reduce The Frequency Of Water Changes Efficient Water Purification: Reduce Frequent Water Changes And Easily Maintain The Water Quality Of The Fish Tank. Keep Clean: Keep The Fish Tank Water Clear For A Long Time, Reducing Maintenance Time And Energy. 3. Adsorption Of Harmful Substances Strong Adsorption: The Honeycomb Star Charcoal Block Has Extremely Strong Adsorption Force, Effectively Adsorbing Harmful Substances In Water. Fish Are Healthier: Providing A Healthier Living Environment For Fish And Reducing The Occurrence Of Diseases. Easy Installation: Place The Water Purification Box Into The Fish Tank, Ensuring Complete Immersion In Water. Regular Maintenance: The Water Purification Box Regularly As Needed To Maintain The Water Purification Effect. Pay Attention To Observation: During Use, Pay Attention To Changes In Water Quality And Take Corresponding Measures In A Timely Manner.