Rust spot: how to remove
I have a rust stain in my pool.
It started when roofing nail fell into the pool, over wintered, discovered during late spring make-ready for summer.
Using a spot out applicator with 50 mL reservoir attached to the end of the pool pole, I’ve tried muriatic acid solution which made it worse—more diffuse area with downstream streaking. I placed a rust out solution which seemed to have little benefit.
Any ideas?