how to set up saltwater aquarium

{"cid":"91197348","title":"Saltwater 6 In 1 Hygger Aquarium Cleaning Tool","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/b1\/9a\/be6dd4bf5dd01a1d5f6fa3b01b99-200x200-1.jpg","attrs":{"Price":"$5.50 - $6.90 \/ Piece","Brand Name":"Hygger","Model Number":"HG-816-TP","Minimum Order Quantity":"1000.0 Piece\/Pieces","Place of Origin":"Guangdong, China","Supply Ability":"100000000 Piece\/Pieces per Month","Packaging Details":"in Hygger exquisite Packing box","Type":"Aquariums & Accessories","Material":"Plastic","Aquarium & Accessory Type":"Cleaning Tools","Feature":"Sustainable","Clearning tool including 1":"1 gravel rake","Clearning tool including 2":"1 metal blade","Clearning tool including 3":"1 flat sponge cleaner","Clearning tool including 4":"1 right-angle sponge","Clearning tool including 5":"1 tube brush","Clearning tool including 6":"1 fish net","size":"44*16*5cm","weight":"0.5","Volume":"500ml","Port":"shenzhen"}}

{"cid":"91178288","title":"WiFi Data Logger Temp PH Salinity Meter Online Controller Seawater SaltWater Tester","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/12\/8d\/93066f4790e297e5feb54b3e48ad-200x200-1.jpg","attrs":{"Price":"45","Brand Name":"YIEYRI","Model Number":"PH-W2825EU","Minimum Order Quantity":"10","Delivery Time":"5-8 work days","Certification":"CE Rohs","Place of Origin":"China","Payment Terms":"L\/C, D\/A, D\/P, T\/T, Western Union, MoneyGram","Supply Ability":"1000","Packaging Details":"plastic box","Name":"PH Salinity Meter","Feature":"APP Alarm & Controller","PH Range":"0.00-14.00pH","Alarm setting range":"0.00-14.00pH"}}