Ospho or Rust Kutter?

[Hutchy]

OK, so I’m stripping my floor, the rust isn’t too bad and I was going to use rust kutter(30% phosphoric acid)to treat the rusty areas but I don’t know if that will etch and I’m assuming my floor is galvanized. I stripped one small section with Citristrip , and now I’m hitting it with a 60 grit flap disc I just don’t like using the Citristrip it’s nasty stuff. I’m about 1/3 done and I’m thinking after some searching maybe I should just use ospho after I’m done stripping. Opinions? That’s the worst of the rust that I already clean up in the pictures.

[Hutchy]

I started reading about Corroseal This converter is composed of gallic acid, ethylene glycol and acetate and rust-oleum rust reformer which is is a tannic acid based rust converting product. It also has an acrylic vinylidene chloride copolymer additive. Tannic acid acts as a chelating agent while the copolymer creates a protective coating. and I'm really confused now haha

[fo4imtippin]

TMI. Spray down some Ospho. I wire wheeled the loose stuff off and oshpoed it all from a spray bottle. I then wire wheeled the residue off of rinsed it out.