Reply by Dallas

OK, maybe I’m mistaken, I haven’t checked on it for a long time.

However, I also did a PH test with our pool test kit and Evaporust was definitely not PH neutral.

I’ll rephrase it:

Most rust removers and neutralizers contain tannic acid or a similar acid.
Tannic acid works well and is cheap.

Whatever you choose to do, research before you go blindly into any method.
I researched long ago and chose electrolysis for most rust removal, although I do use Evaporust and other products as an alternative.

Some work better than others for a particular purpose, so keep that in mind.

Good luck!

-- Improvise.... Adapt...... Overcome!