Will any GFO do?

[Cave Dweller]

Amongst the variety of brands etc that exist out there, are some better than others (other than granual size etc) in terms of outcome? Can I purchase a bag off of eBay or is it better to go from a "dealer"?

 

[Snook]

Buy Rowa. It's GFO on steroids. Be careful. If you use too much it will absorb all the nutrients too and kill the corals

 

[jackson6745]

+1 for ROWA.