What is GFO

[johnny4491]

I been on here for a couple of months and I seen people say if they run a gfo what is that ??

 

[CastAway]

Granular Ferric Oxide - it's granular rust, absorbs phosphates.

 

[johnny4491]

Granular Ferric Oxide - it's granular rust, absorbs phosphates.

Are they expensive?? How big are they because I only have a 6 gallon

 

[CastAway]

Well, in my opinion, there's a couple ways to use it - a passive way, and an active way. The passive way is just to put some in a filter bag and set it somewhere in ones sump. The active way is to either put in in a reactor, or, somewhere in direct flow.

Do you have a sump, or overflow area where you can place a mesh bag with a tiny amount of GFO in it? At 6g, you won't need hardly any. Might want to see what the experts say on use of GFO in a system that small.....

 

[twilliard]

@Randy Holmes-Farley
He can give excellent insight on GFO

 

[Russ265]

Are they expensive?? How big are they because I only have a 6 gallon

man. if i only had a 6 gallon.
cost prohibitive to use gfo imo. especially when you can do an 80+% water change with a 5 gallon bucket.

gfo and phosguard can both lower phosphates. question is. what do they read?

 

[johnny4491]

man. if i only had a 6 gallon.
cost prohibitive to use gfo imo. especially when you can do an 80+% water change with a 5 gallon bucket.

gfo and phosguard can both lower phosphates. question is. what do they read?

Last time I check they were high but haven't checked them recently but I only do like 25% every week

 

[Russ265]

Last time I check they were high but haven't checked them recently but I only do like 25% every week

problem is your volume is so tiny that you could easily do 2x 50% water changes and voila. problem solved.

id also look in to overfeeding with such a small tank.

if you are THAT worried about it put a baggy of phosguard in your hob filter.

 

[CastAway]

My total system volume is around 210-220g. I'm telling you, a 6g tank would scare the crap out of me. I'm confident I'd kill it off. In my own inexperience, it seems like much more of a degree of difficultly.

 

[Russ265]

My total system volume is around 210-220g. I'm telling you, a 6g tank would scare the crap out of me. I'm confident I'd kill it off. In my own inexperience, it seems like much more of a degree of difficultly.

ikr.
if 2-3 gallons gave me a 50% wc id be maintenance free!

265 here

 

[Randy Holmes-Farley Verified Community Expert]

Here's a detailed discussion of what GFO is and how it works:

Iron Oxide Hydroxide (GFO) Phosphate Binders by Randy Holmes-Farley - Reefkeeping.com

 

[johnny4491]

Thanks guys !

 

[johnny4491]

Well, in my opinion, there's a couple ways to use it - a passive way, and an active way. The passive way is just to put some in a filter bag and set it somewhere in ones sump. The active way is to either put in in a reactor, or, somewhere in direct flow.

Do you have a sump, or overflow area where you can place a mesh bag with a tiny amount of GFO in it? At 6g, you won't need hardly any. Might want to see what the experts say on use of GFO in a system that small.....

Do you have a picture of the filter bag that I can buy to put in one of my chambers

 

[CastAway]

Often, a bag will actually come with the GFO.

 

[johnny4491]

Often, a bag will actually come with the GFO.

Thanks