Heavy Iron dosing - The Planted Tank Forum
 
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post #1 of 4 (permalink) Old 02-05-2008, 03:58 AM Thread Starter
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Heavy Iron dosing

Hey all!
I have a 55g with pressurized co2 and 260w of 6700k lighting over it. The tank has only been set up for about 2 months and already I have excellent plant growth.
I am currently dosing with Seachem Flourish products and plan on going EI with dry ferts soon. My question is that is it NORMAL for Iron to be used at such a high level in a heavily planted aquarium? According to my testing I need to dose Iron every day in order to keep the level up around .05 - .1 mg/l
Is this normal? If so then I can see how beneficial (financially) it would be to use dry ferts!
thanks all!
-Mark
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post #2 of 4 (permalink) Old 02-05-2008, 05:09 AM
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Sorry to bust your bubble but Iron tests are [email protected] When I used Seachem's stuff and used a Iron test as a GENERAL guideline, in the same setup as yours, I only dosed about 3 times a week. That and dosing regular flourish twice a week did the trick. Now Im doing dry ferts.
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post #3 of 4 (permalink) Old 02-06-2008, 03:29 AM Thread Starter
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How is it that I can dose with iron and shortly after I have measurable amounts of Iron using my test kit (dupla)....and 24 hours later I use the same kit and it measures NO iron in the tank? Doesn't that mean the iron is being used up? Am I missing something?
thanks!
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post #4 of 4 (permalink) Old 02-06-2008, 04:27 AM
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Plants take up iron VERY VERY quickly. In most cases with "normal" or even higher dosing, the iron level in the water column will be zero, or near zero within hours. I don't think that testing is too useful with iron, whether you're using a cheap kit or a spectrophotometer. Just watch for deficiencies.

Sergio C.
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