I'm no chemist, so I won't give you any advice along those lines.
But, having fought mustard algae for the last 4 years, I will offer some additional advice.
I finally stopped it last year, after I soaked or washed all the toys, floats, and pool tools with very highly chlorinated water. Including my Polaris and it's hoses.
I decided that I was re-introducing the algae with something after I killed it off in the pool.