Granulated Ferric Oxide

[mike007]

how many of you use gfo in your reef? What are your results and would you recommend using it?

 

[TUSI]

I use Rowa its the best. It cost a little more but very effective. Use it as directed and your phosphates go away

 

[Waters]

I have used plain generic GFO from my local reef store from the beginning (in a reactor) and have never had any phosphates in my tank so I guess it is working.

 

[Ole Man]

I have been using GFO from BRS for two years,works great and very reasonably priced

 

[bigfoot86]

I've been running it for about 7 months now without any phosphate issues so far. It's just the basic brs gfo but seems to work well. The only thing I hate about gfo is changing it out when it expires.

 

[GHill762]

I ran GFO for a while, but I prefer Phosguard because I don't use a reactor and I think aluminum works better for me..

 

[shred5]

I have some but I dont use any. I do have it for times if something goes wrong or I have neglected my tank for a bit due to work or life sometimes. Most of the GFO is the same and comes from the same place.

 

[Chris07]

I use BRS regular old gfo. I've used Rowa before too when I've forgotten to order BRS. Regardless of which my phos. reads 0 on color card and hanna checker with either one. I wouldn't run my tank without It. Its too easy to dump old gfo and throw a scoop of new gfo every 3 months. That being said I do a 10% water change weekly and never had a phosphate issue in the past before I ran gfo. Only now that I run it I feed my corals weekly and my fish a few times a day and never worry. Also when you leave town for a week you don't worry about missing that water change all that much.

 

[Reefing Madness]

I do not. Don't recommend it either. You need a reactor of filter to put the stuff in, and it expires quickly. I use a liquid binder, and my skimmer removes that from the water column. I dose only whats needed on a weekly basis, no fuss no muss.
GFO removes phosphates well, at first very fast, then it expires and you have everyone asking, "what happened, its not working anymore".

 

[Trevor40]

I used it a until I noticed all my corals were pale. Once I took the GFO offline my colors came back. I guess my skimmer or water change schedlle was enough for me to not need a PO4 remover.

 

[poproxmax]

I use Deltec's Aqua Crown Phosphatabsorber. It doesn't say anywhere that it's GFO but it sure looks like it so if it I use it in a Reef Octopus reactor and it works great!

 

[dryad001]

I do not. Don't recommend it either. You need a reactor of filter to put the stuff in, and it expires quickly. I use a liquid binder, and my skimmer removes that from the water column. I dose only whats needed on a weekly basis, no fuss no muss.
GFO removes phosphates well, at first very fast, then it expires and you have everyone asking, "what happened, its not working anymore".

Im assuming your using lanthalum chloride?

 

[Reefing Madness]

I would assume thats what in it. Switching to SeaKlear, cheaper and goes a longer way.