How much GFO?

[Myka]

Asylumdown, I offered an amount that I've found safe to use in a variety of conditions. The trouble is that an aquarium can have a "zero" or near zero reading and still have a lot of phosphate within the aquarium depending which test kit a person is using. Using too much GFO can have major consequences.

[asylumdown]

Originally Posted by Myka

Using too much GFO can have major consequences.

Has anyone ever figured out why? I know lots of people have reported problems, but other than a sudden drop in PO4 levels, what else could GFO be doing? I've always been suspicious of GFO in general and think it can cause a few of the problems it's often employed to treat, but do you think that too much GFO is harming corals because of something it's adding to the water, or something it's removing?

[jason604]

Originally Posted by asylumdown

Has anyone ever figured out why? I know lots of people have reported problems, but other than a sudden drop in PO4 levels, what else could GFO be doing? I've always been suspicious of GFO in general and think it can cause a few of the problems it's often employed to treat, but do you think that too much GFO is harming corals because of something it's adding to the water, or something it's removing?

I suspect that large amt pulls po4 too fast n the tank gets a big shock

[reefwars]

Originally Posted by jason604

I suspect that large amt pulls po4 too fast n the tank gets a big shock

be it small or large they would both pull out P04 based on the amount of water ran through them and how much they can pull depends on whats passed through and whats available.

for example a guy who fills a reactor and only runs it for 5 mins a day will most likely pull less phosphates than a guy who runs a much smaller amount and changes it every 24hrs

reason being is the amount of water passed through

[Myka]

Originally Posted by reefwars

for example a guy who fills a reactor and only runs it for 5 mins a day will most likely pull less phosphates than a guy who runs a much smaller amount and changes it every 24hrs

[reefwars]

i change out small amounts more often as oppsosed to larger amounts less often , as per what RHF recommends and has always worked great for me

i dont measure or weigh it out but i run maybe 1-2" in a tlf 150 reactor

i change mine out maybe every 2-4 weeks , i dont change it out so much based on the P04 test numbers but i can visually tell when my gfo is exhausted