Thank you so much for trying out our game! ♡
It sounds like you're referring to the corruption on the platforms out to the big pillar. The orange corruption is tougher than others and can only be completely removed by cleansing the restoration cluster close to it - in this case the pillar.
My advice would be to use your watergun, not zoomed in, to cleanse the top of the platforms so you can make your way to the pillar. If you clean the pillar, top to bottom, nature will help you rid the surroundings of orange corruption.
I hope this helps ^^