How much GFO?

[asylumdown]

Originally Posted by Myka

Using too much GFO can have major consequences.

Has anyone ever figured out why? I know lots of people have reported problems, but other than a sudden drop in PO4 levels, what else could GFO be doing? I've always been suspicious of GFO in general and think it can cause a few of the problems it's often employed to treat, but do you think that too much GFO is harming corals because of something it's adding to the water, or something it's removing?