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Boiling bright nickel plating solution turns dusty parrot green

Q. Hi, I manufacture silver plated handicrafts. I'm doing silver plating over bright nickel. My question is that from long time we use electric heaters for boiling bright nickel solution. But it is too expensive. Now I'm trying LPG gas water geyser for boiling nickel plating solution.but after some time running it's change the water colour dark parrot green. I can't understand why colour change from green to dark dusty green. For this we are also treating solution. But the problem is not solved.

gaurav verma
plating - India
February 9, 2017

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February 10, 2017

Q. Hello, sir. The link you can understand for gas water geyser for heating: http://www.elgas.com.au/blog/1211-how-does-a-tankless-instant-continuous-flow-hot-water-heater-work

     

But my question is that when I'm heating bright nickel solution by this process, it changes the colour of solution like parrot green. And when I use electric heater, the solution is normal. And for treatment we use filter process from many times.

gaurav verma [returning]
handicrafts - hathras, India