What can influence a tank's Mg reading

[Delphinus]

I'm kind of apprehensive about the future of IO with the chapter-11/receivership/whatever of Aquarium Systems/Spectrum Brands/whatever-they're-called. From all I've been able to read though, for now and the foreseeable future, they intend to keep operating. Hope that they are able to resolve and continue, because it would truly suck if IO went away.

I ran with IO for many years early on in the hobby and yeah, never had a problem with it. Only switched because I wanted to see why there were so many other options but at the end of the day, any lesson I've learned is that a salt is just a salt. It is a commodity item.

Let's face it, you have to dose stuff anyhow, and you have to test stuff anyhow, no matter what. Maybe with one salt or another you may have to dose more of this or less of that but you're not doing any less testing, ultimately if you do you're taking a risk (this is a lesson I seem to need to relearn every 6 months or so ).

I'm pretty sure I'm "coming home" to IO for the next little while...