What corals, etc, use iron. Do you test ?

[427HISS]

What critters, algae etc,... in our reefs use iron ?
Do you add a iron supplements ?
Do you test ?

 

[Randy Holmes-Farley Verified Community Expert]

There's no point in testing iron becuase no method you'd use can detect NSW levels, or anything close. Especially kits.

Yes, I dose. Mostly for macroalgae.

I detail why and how here (although I now dose a DIY using Fergon tablets from a drug store):

Chemistry And The Aquarium: Iron In A Reef Tank ? Advanced Aquarist | Aquarist Magazine and Blog