"I think it not only sends an environmental message, but it can also apply to so many other things, bullying, family violence and so on," he said.
"Be the solution, not the pollution, that's similar to, 'Don't be the bully, be the bro'. You can relate it to almost anything."
Mr Tumarae said he hoped the message would stick in people's minds.
"If people see it, then maybe their behaviour might change. It's nothing but positive for our city."
He hoped volunteers would continue to be involved with similar projects in the future.
District councillor Karen Hunt said she was pleased the Bully Free Bro community had come on board to help paint over an unsightly tagged wall with an inspiring message.
"Quotes that the community can identify with on a personal level have the most impact," she said.
The "Be the solution, not the pollution" catchphrase was coined by Rotokawa Primary School teacher Brigitte Holmes, which gained traction when one of her students, Storm Peita, used it as inspiration for his clean-up efforts which won him last year's Keep Rotorua Beautiful Environmental Award for primary school students.