My new 9450 misses a few spots on the radius of the wall and now I have a line of discoloration below the waterline, near the bottom of the pool.
The vinyl is clean everywhere else, except where the robot misses due to climbing the wall and the scrubbers not hitting the location.
There are aslo some small stains along the seam in the vinyl...
I've tried brushing, but the stain is stubborn.
What's the best way to clean the vinyl under water?
Pool is now closed.
This will be a project for the spring.