When to hook up the GFO reactor to reduce PO4

ryshark

Well-Known Member
View Badges
Joined
Mar 9, 2011
Messages
596
Reaction score
365
Location
SoCal
At what point do you think it’s time to get the GFO reactor online? I don’t think I’m quite to that point yet but here are my numbers. Nitrate about 5 and alk 8.5 - 9.

8/25 my PO4 was 0.14 so I did a 20% water change and cut my feeding in half

9/5 my PO4 was 0.17 so I Increased my skimmer to skim a little wetter.

Before August 25th, I went a long time without testing PO4, it was on 6/4 and was 0.05.

I don’t think I’m in the red zone yet, but I need slow the upward trend.
 
BRS

Aere

Active Member
View Badges
Joined
Dec 10, 2012
Messages
216
Reaction score
128
Location
Minnesota
You can always just turn it on and monitor it and see how fast it drops it. Or start with a small amount. You don't need to fill the reactor and go ham right away. Its what I did. Till I found my tanks happy point with the proper amount of gfo and refugium maintenance.
 

blasterman

Well-Known Member
View Badges
Joined
Feb 14, 2019
Messages
912
Reaction score
948
Got algae problems? No? Thats the wild card here. I don't like the upward trend and it can lead to algae issues, but you don't want to dive to fast either. Montipora and especially birdsnests dont like phosphate dives.
 
First Choice
OP
ryshark

ryshark

Well-Known Member
View Badges
Joined
Mar 9, 2011
Messages
596
Reaction score
365
Location
SoCal
I do have a reactor in the garage and I have media too, I would definitely start slow if I decide to hook it up.
I don’t have any algae problems, don’t have any montipora or birdsnest, don’t have a fuge either. My only export is skimmer and water changes I try to do 20% every 4-5 weeks. But I’m not so sure 0.17 is a reason to start GFO just yet.
 

Charlie’s Frags

Follow me on Instagram @Charlies Frags
View Badges
Joined
Dec 3, 2017
Messages
4,270
Reaction score
5,828
Location
Houston
I do have a reactor in the garage and I have media too, I would definitely start slow if I decide to hook it up.
I don’t have any algae problems, don’t have any montipora or birdsnest, don’t have a fuge either. My only export is skimmer and water changes I try to do 20% every 4-5 weeks. But I’m not so sure 0.17 is a reason to start GFO just yet.
3BA0804A-2BF9-48FD-AF18-1B746E71E531.jpeg
 
Top Shelf Aquatics

Fishingandreefing

Valuable Member
View Badges
Joined
Nov 7, 2019
Messages
2,242
Reaction score
1,092
I got fed up with GFO. It kept clogging the foam filters and I know some was escaping into my reef. My phos. was at .26 so now I am trying PhosGuard.
Cheers! Mark
Mixing it with carbon then pour them in stockings. Tight it up like a bag and put it in the reactor or media cup.
 

Fishingandreefing

Valuable Member
View Badges
Joined
Nov 7, 2019
Messages
2,242
Reaction score
1,092
One thing I have learned is that you never use 100% recommended dose of gfo not even at 50%. I am currently only using 15%. It stripped my corals. I am still fight phosphate at around .29
 
Fritz

Pedoconfuego

2500 Club Member
View Badges
Joined
Oct 8, 2012
Messages
3,987
Reaction score
3,278
Location
estomago
Mixing it with carbon then pour them in stockings. Tight it up like a bag and put it in the reactor or media cup.

I like doing this if I am scared of dropping po4 too fast. It really helps slow the po4 absorption so you can do it slowly. Sometimes I will just hang it in the sump but I have to shake the bags daily to keep the media from clumping too much for it to work.
 
Aquarium Specialty - dry goods & marine livestock

Do you have reef tank aspirations and visions?

  • Yes (please tell us what in the thread)

    Votes: 112 84.8%
  • NO

    Votes: 18 13.6%
  • Other (please explain)

    Votes: 2 1.5%

Online statistics

Members online
802
Guests online
3,465
Total visitors
4,267
Tunze
Top