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Lyotim88
06/16/2009, 01:04 AM
What's GFO and what are the advantages to it?
PRDubois
06/16/2009, 01:07 AM
Well
SKremk
06/16/2009, 01:12 AM
Isn't GFO granular ferric oxide? It's a fine-grained material that's used to lower phosphate levels.

I think you're thinking of GFCI, or ground fault circuit interrupters.
Lyotim88
06/16/2009, 01:17 AM
yes, thank you
cloak
06/16/2009, 01:17 AM
Something you should not have to worry about. Using RO/DI and all...
der_wille_zur_macht
06/16/2009, 07:02 AM
<a href=showthread.php?s=&postid=15201092#post15201092 target=_blank>Originally posted</a> by cloak
Something you should not have to worry about. Using RO/DI and all...

Even with RO/DI, there are still plenty of opportunities for phosphate to make it into a system (feeding is a huge contributor), hence GFO can still prove necessary in some situations.