I really messed up

[Randy Holmes-Farley]

People dose lots of things, doesn't mean any of it helps.

Used to have a lot of unexplained stn when I used to use gfo, and only thing out of whack per triton test was iron. Then I started alternating between gfo and aluminum type of po4 control (phosguard? Idk don't remember) thinking they would cancel eachother out. Not much of anything dies since I stopped using anything for po4 control years ago. And stopped paying any attention to po4 & no3 whatsoever.

You may be confusing GFO and iron dosing.

Iron dosing clearly helps in many cases, and huge numbers of folks dose it.

The owner of reefcentral had poor macroalgae coloration and growth. 24 h after dosing iron at my suggestion, it greened up and began to grow faster. I had a similar effect 20 years ago at someone else's suggestion.