"Add 2 bottles of hydroxide solution" on your website on maintainence - how much it cost and why I need it?

It wont cost you a dime, as we provide it for you in abundance. Due to R&D instead of 2 bottles needed for the unit we have cut the solution by only half a bottle or less as we have added more steel plates in the unit. It was pretty costly for us to continue to redesign it over and over to improve the unit but we intend to dominate this market and provide great satisfaction to our customers. Our previous unit was only generating 70 litres per hour with more amps. Our latest unit is now generating 80 litres per hour with less amps.