How to keep the green?

[dzhuo]

Thanks didnt know thay had this, but ill stick to what i been doing it been working for me .

There is a possibility that your corals' green coloration has nothing to do with you adding iron. Are you having problem before adding iron? But I agree that if it works and you feel comfortable using it, then there is no reason to change what's working.

And gfo has Iron and heavy metals yes but every little when used correctly.

How to you use GFO correctly and what's "very little"? Typical surface concentrations of iron is around 0.000006 ppm. The test done above shows GFO leaching roughly 100000x more iron in 24 hours with still water (no tumbling action). Imagine what happen if the GFO is slowly tumbling in 2 months period. Obviously, the "problem" with the above test is the concentration of media to water ratio is extremely high and no one is going to be using that much GFO with relatively the our tank size. The other interesting thing about iron is that you are already adding lots of it even if you don't use GFO: Fish food. Without knowing if your tank is iron limited, it doesn't sound very useful to just start dosing blindly.

 

[allsps40]

On another note, I never thought I would care about these colored sticks when I first set up my tank and now I want more!!! They're like skittles, you can't have just one I suppose. :lol:

Welcome to the sps addict club, we have shirts $19.99 LOL JK. Oh API test kits are junk the PO4 test is totally useless. Alk and Ca are ok at best. Only the Nitrate, Nitrite and Ammonia tests are good.

 

[Lynnmw1208]

I was thinking about getting the red sea one for phosphate, how do you guys feel about that one?

 

[batt600]

There is a possibility that your corals' green coloration has nothing to do with you adding iron. Are you having problem before adding iron? But I agree that if it works and you feel comfortable using it, then there is no reason to change what's working.



How to you use GFO correctly and what's "very little"? Typical surface concentrations of iron is around 0.000006 ppm. The test done above shows GFO leaching roughly 100000x more iron in 24 hours with still water (no tumbling action). Imagine what happen if the GFO is slowly tumbling in 2 months period. Obviously, the "problem" with the above test is the concentration of media to water ratio is extremely high and no one is going to be using that much GFO with relatively the our tank size. The other interesting thing about iron is that you are already adding lots of it even if you don't use GFO: Fish food. Without knowing if your tank is iron limited, it doesn't sound very useful to just start dosing blindly.

If your using the cheap stuff but even so the skimmer will strip alot of that out of the tank thats why dosing is needed . Skimmer strip 75% of element needed in a tank and even more when over skimming so Iron gets removed rapidly just from skimming.

 

[dzhuo]

I am not sure where you draw the conclusion. 75% of what element is stripped? Studies I have seen show skimmer remove roughly 35% (or less) of TOC; no where near 75%. Within the 34% TOC removed, majority of them are mg and cal.

Feature Article: Further Studies on Protein Skimmer Performance

A perhaps more interesting observation to emerge from these skimmer studies involves not the rate of TOC removal, but rather the amount of TOC removed. None of the skimmers tested removed more than 35% of the extant TOC, leading to the conclusion that bubbles are really not a very effective medium for organic nutrient removal.

Feature Article: Elemental Analysis of Skimmate: What Does a Protein Skimmer Actually Remove from Aquarium Water?

C: 21.08 %
H: 2.39 %
N: 2.22 %
Ca:17.43 %
Mg: 1.35 %
Si: 4.76 %
P: 0.16 %

Iron is not even significant enough from the content. I have no idea what you mean by "cheap stuff" either. I would love to see other studies that I am not aware of.

 

[danil]

I was running GFO before and after my "green tsunami'. So... not saying iron has no effect on green coloration in my case iron was not the reason. My iron level (whatever it was) stays the same what was up are nutrients. And with spike in nutrients (plus bit of phosphate) I think I could read the book next to the tank with lights off under that glowing green radiation... lol

 

[batt600]

I am not sure where you draw the conclusion. 75% of what element is stripped? Studies I have seen show skimmer remove roughly 35% (or less) of TOC; no where near 75%. Within the 34% TOC removed, majority of them are mg and cal.

Feature Article: Further Studies on Protein Skimmer Performance



Feature Article: Elemental Analysis of Skimmate: What Does a Protein Skimmer Actually Remove from Aquarium Water?


Iron is not even significant enough from the content. I have no idea what you mean by "cheap stuff" either. I would love to see other studies that I am not aware of.

here search Bonneville's Protein Skimmer thread . It wont let me put the link up

 

[dzhuo]

here search Bonneville's Protein Skimmer thread . It wont let me put the link up

RC has a tendency to block certain sites due to policy so I won't be surprise. Is this the only "study" you have? If so, I won't be surprise. I encourage you (or anyone else) to check out the other 2 studies I provided and draw your own conclusion. Lastly, this is only my personal believe: Anyone who believe Bonneville's "study" is creditable knows nothing about scientific study.