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post #1 of 10 (permalink) Old 05-09-2008, 05:23 PM Thread Starter
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question about water conditioners

so the ppm out of the tap at my house is around 100 but when i put my water conditioner it jumps to around 500!!

i know ppm isnt an exact measure of hardness but wow, that's alot of stuff in the conditioner, im using this


i got the pond one cause i figure more bang for the buck. but my bottle smells kinda funny, like sulfur, i was wondering if the conditioner can go bad? so far my fish seems to be doing ok, but im a little concerned as i've never smelled anything like this before from the conditioner.

anyone know got any advice?
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post #2 of 10 (permalink) Old 05-09-2008, 06:16 PM
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Are you talking about TDS? I'm not sure what you are measuring, since you just say you measured 100 ppm before the conditioner, and 500 ppm afterwards.

Also, I think Prime also smells like sulfur; this is OK, it is due to the sodium thiosulfate that is in the conditioner to neutralize the chlorine.

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post #3 of 10 (permalink) Old 05-09-2008, 06:20 PM Thread Starter
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yeah, ppm is a measure of tds
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post #4 of 10 (permalink) Old 05-10-2008, 12:22 AM
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Quote:
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yeah, ppm is a measure of tds
What I meant was that "ppm" by itself is not a measure of anything; it is simply a unit of measurement. You can use ppm to measure things like nitrates, nitrites, ammonia, etc.

Anthony


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post #5 of 10 (permalink) Old 05-12-2008, 02:09 PM Thread Starter
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well, an semi-indication of hardness tho right? well, i guess i forgot to tell you i have an EC style ppm meter and im guessing it's giving me the TDS in ppm.
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post #6 of 10 (permalink) Old 05-14-2008, 01:23 AM Thread Starter
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say i have alot of calcium carbonate in my tank and i wana make my waters soft, can i just add aquaruim salt. i know this will affect the TDS, how high can teh tds go before it's bad for the tank?
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post #7 of 10 (permalink) Old 05-14-2008, 01:26 AM Thread Starter
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Quote:
Most aquatic ecosystems involving mixed fish fauna can tolerate TDS levels of 1000 mg/l.[4]
http://en.wikipedia.org/wiki/Total_dissolved_solids


hmm.
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post #8 of 10 (permalink) Old 05-14-2008, 04:33 AM
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I don't see how adding aquarium salt will make your water softer. "Softness" is defined as the absence of magnesium and/or calcium cations.

As for the TDS, it's generally better to keep it lower. Just because an organism can tolerate it, doesn't necessarily mean it's healthy. An analogy: your boss at work gives you a big project, that is due by the end of the week. You tolerate the stress, but wouldn't it be much healthier if you didn't have stress in the first place?

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post #9 of 10 (permalink) Old 05-14-2008, 04:20 PM Thread Starter
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ok, i see. i got confused because household water softners use salt in an ionic exchage to remove minerals so yeah.. haha i guess it has to go thru some kinda mechnical process. i guess im just gona buy a ro/di unit.
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post #10 of 10 (permalink) Old 05-14-2008, 08:10 PM
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ok, i see. i got confused because household water softners use salt in an ionic exchage to remove minerals so yeah.. haha i guess it has to go thru some kinda mechnical process. i guess im just gona buy a ro/di unit.
A household water softener uses an cationic exchange to replace the cations contributing to hardness (calcium and magnesium) with another cation which does not contribute to hardness (sodium). Since the definition of "hardness" is the presence of calcium and magnesium cations, when they are absent, the water is called "soft" (at least to humans).

For fish however, the presence of other cations (i.e. namely sodium, in this case) will increase the TDS.

Anthony


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