Soaking green off ropes - Patio Magic, Vanish, and/or biological powder?

As a slight aside, is patio magic safe to use of steering wheel leather? Of what’s the best way of getting that less green and more silvered leather?
 
Has anyone tried Vanish out on these sheets etc? . We soak the genny sheets overnight in a bath of washing powder and Milton type solution which seems to help .
I put my sheets through the machine on 40deg with a dose of biological and a dose of Vanish, they came out clean.

I did the same with the lazyjacks (which are white with flecks but had the most green on them) and they came out almost completely clean but with a faint green hue residue on them plus on some white-based halyards that were also in on that wash. A second wash should clean this off completely.
 
Did a triple rinse in a bucket using a sink plunger for agitation. Rinse water still rather green but i got bored, and er indoors wanted a shower.

Im now thinking live algal residue probably wont do much harm, but dead algal residue might feed mould, which could damage both the rope and me, so that perhaps contraindicates biocides.

Now strung between clothes posts in the back green.
 
As a slight aside, is patio magic safe to use of steering wheel leather? Of what’s the best way of getting that less green and more silvered leather?
One way to find out - choose a small out of the way patch and paint it on, then report back in a few weeks.
Suspect will be OK, but I wouldn’t apply without doing a test patch first (as we did on our sprayhood)
PS We have wheel covers which are used when leaving the boat, these covers do need some Patio Magic after the winter.
 
As a slight aside, is patio magic safe to use of steering wheel leather? Of what’s the best way of getting that less green and more silvered leather?
It’s safe for the leather yes. Wash thoroughly after a week and don’t use the wheel in the mean time without being careful as it isn’t safe for human consumption (snacks at the helm after steering)
 
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