If you need to purchase a grid replacement separately, please contact customer service. Nicrew Hot Chihiros Doctor 3rd generation Algae remove electronic inhibit green aquarium fish water plant tank Introduce: EU / AU / US / UK Plug Maintaining functions of restraining and suppressing algae growth, promoting growth of aquatic plants, protection for fish and shrimps Constant elimination of pathogenic bacteria and precaution of biological diseases, etc Prevent and inhibit diseases and algae formation at startup and over the aquarium life The new Chihiros Doctor has integrated 3 application covering usage of aquatic plants, fish and shrimp keeping into only a single Doctor device Covering up to 90% aquarium sizes in the market, hence reducing cost of spending and offers greater convenience to take care of the aquarium Feature: 1 Inhibit green algae and promote plants growth Inhibit phytoplankton initial growth and reproduction. Activate microelements to promote plants growth Promotion of plants growth activates photosynthesis to stabilize ecosystem. 2 Kill the crustacean pathogenic bacteria Automatically kill the pathogenic bacteria in the water in each hour through direct and indirect disinfection, which greatly improves the survival rate of juvenile prawns. 3 Depend on strong sterilization capabilities effectively kill pathogens Aeromonas hydrophila Aeromonas "Aeromons hydrophila", herpes, fungal, coli forms and other 99.9% kill efficiency results test. 4 Safe because of coexistence with filter bacteria As there is no residual toxicity, it is limited to aerobic bacteria. Compared to UV sterilizer, Chihiros DOCTOR does not work steadily so regenerating and recovery of filter bacteria is rapid. 5 ALC program is intelligent management algorithm Aquarium environment changes according to initial, middle, last stage, sterilizing intensity and operation cycle is intelligently designed to change by time series. As ALC program can simply choose a mode according to a aquarium capacity, it is very easy to use. NOTICE - It is designed not work all the time, only work about 30 seconds each 15-20 minutes. - Only used in fresh water. DO NOT use in water with a TDS above 500. - The mesh can keep use for long time without clean, but we suggest exchange a new mesh every 6 months. Q A: How does the Chihiros Doctor works? It is designed not work all the time, it works bubble come out about every 30seonds Does it hurt fish? No influence to fish, shrimp and plant Can it use in marine water? Only used for fresh water How long do I need to clean the mesh? The new 3rd generation mesh can keep use for long time without clean, but we suggest exchange a new mesh every 6 months FREE SHIPPING IS INCLUDED!