Red Sea Marine Master Kit, work in fresh water? - The Planted Tank Forum
 
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post #1 of 9 (permalink) Old 04-28-2005, 10:29 PM Thread Starter
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Red Sea Marine Master Kit, work in fresh water?

I have the Red Sea Marine Master kit and was wondering if any of you knew if this would work with my FW tank. I am specifically interested in using the nitrate test, it would be great if I could save 10 bucks on buying a separate no3 kit.

-eric
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post #2 of 9 (permalink) Old 04-29-2005, 12:59 AM
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The calibration levels are usually quite different for salt water and fresh water. I have AP nitrate kit, which has one chart for fresh water, another for salt water. I also tested my AP saltwater calcium kit, the measurement is also different for freshwater and saltwater. So in general, you should assume that the saltwater kit can not be used directly to measurement freshwater, unless the kit has specific instructions to do so.


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post #3 of 9 (permalink) Old 04-29-2005, 05:43 AM Thread Starter
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Thanks Shalu, not the answer I wanted to hear, but a great answer... should help a lot of others.
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post #4 of 9 (permalink) Old 04-29-2005, 04:02 PM
 
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Sorry but take that Master kit and throw it in the trash. This was my very first sw set of test kits and trust me don't rely on their reading or consistency. Spend a little more and get Salifert or Seachem but don't bother with Red Sea. Actually I even go further than saying that it's not only their test kits that are garbage it's nearly all the sw line. I have a skimmer and it was garbage ($450)+) from day one.

If you go to Big Al's you can get a A/P nitrate, nitrite kit for about $8.00 and that's money better spent and NO I wouldn't use sw test kits on fw *unless* they specify they are for both uses.
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post #5 of 9 (permalink) Old 05-02-2005, 05:36 PM
 
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Here are the AP test kits that I've found to work in FW and SW:
Ammonia (uses 2 different color charts)
Nitrite
Nitrate (uses 2 different color charts)
Gh
Kh

I use Seachem brand for Phosphate and Calcium. I know the phosphate works in SW and FW. never tried the calcium kit in FW, but it should work (though testing calcium shouldn't be necessary in FW, normally).

I've heard a lot of bad comments on RedSea kits being inaccurate, and as I understand, some of their kits only tell you "low, medium, high" rather than giving numeric readings.
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post #6 of 9 (permalink) Old 05-02-2005, 08:54 PM
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Malkore, how did you calibrate them to determine that they work?


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post #7 of 9 (permalink) Old 05-03-2005, 01:51 AM
 
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If you're talking about A/P test for both FW & SW they give you independent charts for both. The tests follow the same instructions it's just the different end result chart you check. They are very affordable and work great.

malkore I'm not impressed with Seachem's Calcium test kit. I've complained to them 2x and had them replace the kits 2x (very good customer service) only to find a new problem with the next kit. My current kit (and from what I've heard from other reefers this is a problem numerous people have with it) is off the readings by .5. Which is 50 off of my actual reading, for the money the test goes for I'd like it to be 100% accurate and not within 50. Have you ever encounted this problem? My next ca test kit will be Salifert, I have several of their test kits and they are not only easy to use but 100% accurate.
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post #8 of 9 (permalink) Old 05-03-2005, 01:59 AM
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Quote:
Originally Posted by cake fan
If you're talking about A/P test for both FW & SW they give you independent charts for both.
yes, but only for NO3 and Ammonia. There is no reason to believe the same color applies exactly for SW and FW for other kits(at least a sanity check with table salt is required), with one chart or same drop count. I tested and know for sure, it does not work for AP Calcium.


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post #9 of 9 (permalink) Old 05-04-2005, 04:12 PM
 
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My AP nitrite kit said it's for FW and SW. I can't recall if it had two different color charts, but yes the nitrate and ammonia have separate charts.

I tested the AP Kh against my SeaChem alkalinity kit, converted the meq/L and found them to give identical results. It makes sense that general and carbonate hardness wouldn't be affected by the presence of salt.
SeaChem's phosphate kit is for FW or SW use, per the manufacturer.

I have no way to validate my calcium test kit with another test. I could use a calculator to make 1gallon of R/O have 400 ppm, and then test it to see if my kit is correct.
Salifert is a great brand, just a little better than SeaChem, IF you can understand their poorly translated instructions.
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