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Darksoul
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Post subject: Calcium Test - End point frustration  Posted: Feb 08, 2010 - 04:33 AM |
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FishGeek Member
Joined: Apr 06, 2008
Posts: 52
Status: Offline
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So, I'm doing the calcium test. My problem is the end-point color is a really dark blue, but according to the manual the test is done once it turns blue.
When it turns blue for me its a really light blue usually.
...do I just keep adding drops until its exactly the end-point color, or am I doing it correctly by stopping when it first turns blue?. It might sound stupid, but I have no idea why the end-point is such a dark blue. I cannot reproduce the dark-blue color even after 20+ drops, so I'm guessing it is the light blue.
It's really frustrating how they made the color so dark if its supposed to be a light-blue. Would save newbies a lot of confusion if they made it light-blue. |
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beaslbob
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| Post subject: RE: Calcium Test - End point frustration Posted: Feb 08, 2010 - 10:07 AM |
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FishGeek Member
Joined: Jan 17, 2006
Posts: 5262
Location: huntsville, al
Status: Offline
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Spuds725
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| Post subject: RE: Calcium Test - End point frustration Posted: Feb 10, 2010 - 12:07 PM |
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Moderator Extraordinaire
Joined: Mar 02, 2005
Posts: 3817
Location: NW Ohio
Status: Offline
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What he said--
Some end points are hard to read--
It is very important to swirl after each drop as you near the endpoint...
If you are not confident of your reading, most LFSs will test your water for you if you bring some in-- a good idea to verify your reading
Realize these are home kits and the accuracy is only going to be close-- it should be accurate within 20-25 ppm if you do the test correctly...
Are you using API??
If so, I read their calcium test is pretty good-- I've never used it-- I use Salifert which are a bit pricey to use. |
_________________
Bill -- 125 gallon (almost a) reef
100 gallon sump (50 gallon Refugium), ASM G4X Skimmer
Fish (Date added)
1 Orchid Dottyback (Feb 2004) 3"
1 Bicolor Angelfish (Mar 2004) 4"
1 Blue (Regal) Tang (Mar 2005) 5"
2 Ocellaris clownfish (Oct 2008) 2.5"
1 Yellow Tang (Sep 2009) 3"
Mixed reef
~200 pounds of live rock.
Coming Soon: Mandarin... (maybe)
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Darksoul
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| Post subject: RE: Calcium Test - End point frustration Posted: Feb 11, 2010 - 01:06 AM |
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FishGeek Member
Joined: Apr 06, 2008
Posts: 52
Status: Offline
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I use API, yes. I have also emailed API about it but no response back.
My LFS told me that it was infact the end point color I need to get. Unfortunately, going by this means I have around 1700ppm calcium in my water.. which I find _very_ hard to believe. Especially since the API guide says I should reach the end point color (I.E. Blue) one or two drops after the purple color.
So I'm going to take a wild guess here and say my end point is actually the light-blue color despite what the guide shows on the color..
Waiting on API to confirm. |
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