Flourish liquid and root tabs have Chlorine?!? why? - The Planted Tank Forum
 
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post #1 of 8 (permalink) Old 06-29-2004, 01:49 AM Thread Starter
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Flourish liquid and root tabs have Chlorine?!? why?

Chlorine is something we work hard to keep out of our aquaria, there's all sortts of different water conditioners designed to remove the nasty stuff, so why does Seachem put it in their fertilizers? (Flourish liquid has 1.15% chlorine, the root tabs have 0.55%)

i realize that the amounts involved are miniscule, but i'd rather not introduce chlorine into my tank, luckilly these ferts are unopened, they're going back tomorrow....
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post #2 of 8 (permalink) Old 06-29-2004, 02:01 AM
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It's in a different form, combined with other substances; also, it's in very small doses. Plants actually use, and need chlorine in order to grow.

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Plants are gone, but my 33gal and I are back after a long hiatus.
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post #3 of 8 (permalink) Old 06-29-2004, 02:12 AM Thread Starter
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So the chlorine in the ferts isn't going to negatively affect my fish? (Dwarf Puffers and Otocinclis)

as far as dosing goes, how much Flourish should be used in a 20 Long (i have the little pipette that comes with Flourish Iron) i was thinking, based on the bottle, that 1ml should be enough in a 20 long

how long between dosings, with the weekly water change?, if i use the root tabs for my Crypt Wenditii should i reduce the amount of liquid used to .5ml?

finally, how critical is it to refrigerate the opened bottle?
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post #4 of 8 (permalink) Old 06-29-2004, 02:17 AM
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As long as you don't over-dose (as with ANYthing), the chlorine atoms won't hurt anything, no. I myself am still working on dosing, so I can't offer any advice other than this: It really depends on how heavily planted your tank is, lighting, types of plants, etc etc etc... heh. I'm sure others can offer better help on this than I can; I'm just saying that you don't need to worry about the chlorine.

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Plants are gone, but my 33gal and I are back after a long hiatus.
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post #5 of 8 (permalink) Old 06-29-2004, 02:20 AM
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I dose half doses twice a week in all my tanks, I never use full doses. Iron I only dose 2cc once a month. I have never refrigerated my open bottles of ferts.

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post #6 of 8 (permalink) Old 06-29-2004, 02:52 AM
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Hi

The chlorine listed in the elemental analysis of Flourish and other fertilizers is present in form of CHLORIDE ions (Cl-). That is in the same form as for example in table salt (NaCl) or in Potassiumchloride used sometimes to dose potassium. Cloride ions are harmless. The dangerous form of chlorine is elemental chlorine (Cl2 gas) or some variations thereof, for example chloramine.

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post #7 of 8 (permalink) Old 06-29-2004, 05:08 AM
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an excellent example. Chlorine(Cl) and Sodium(Na) being both extremely poisonous on their own, virtually harmless in the form of table salt. Things such as bleach, or chloramine are not however as harmless :P

--cich

Plants are gone, but my 33gal and I are back after a long hiatus.
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post #8 of 8 (permalink) Old 06-29-2004, 07:41 AM
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Chlorine (liquid) act as buffer/preservative for those fertilizers.
It's like the acid in Coke, it's there to preserve it from nasty stuffs.
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