DIY Product make yourself to auto fill water in your tank
  Prevent below water level in your tank
  Very Easy to installation~ No any technical skill
  It's also can connect with your RO system if you need
  You can connect with different type of pastic bottle(Depends of you need for 1.25Litres or 2 Litres or 5 Litres bottles)

Specification

Air Tubling included
Mount Included (19cm)
Air Check Valve Included