I think the only real way to tell what you want is to look at a few complete tanks with both.
Side by side empty the low iron is noticably clearer.
Once the tank is full of water, rock, corals, and covered in coralline, you would be hard to tell the difference imo.
Most people like myself focus on the reef and not the glass.
Just my observations yours may vary!
Side by side empty the low iron is noticably clearer.
Once the tank is full of water, rock, corals, and covered in coralline, you would be hard to tell the difference imo.
Most people like myself focus on the reef and not the glass.
Just my observations yours may vary!