jjoos99
New member
Following this thread and good to see it has been 9 years old. A question is that I'm running GFO but PO4 keeps at around 0.16, the tank is with GHA issues so I want to keep the PO4 lower so I'm starting with lanthanum dosing as well. But I heard there could be issues with lanthanum dosing vs. GFO as lanthanum will strip PO4 from GFO. Any thoughts on that?
If you are going to use lanthanum there is no need to use gfo, remove it completely. When I used gfo it seemed that I had nothing but issues with and problems. I now dose lanthanum through my auto doser. Its been a reef saver for me and VERY cost effective vs any other method of phos control.
Jeff