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Old 01/11/2008, 10:46 AM   #1
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SimilanRocks's Avatar
Join Date: Dec 2006
Location: La Habra, CA
Posts: 473
Good calcium test kit?

I have been using Salifert Ca test kit for over a year. It's very good but I'd like to try something else.

I got API but didn't like it. The accuracy is 20. The 5ml tube measurement is off. And it takes more time to drop, close cap, shake, compare color, open cap, drop, ...

Is there other kit that can read accuracy at 10? I'm looking at SeaChem and Tropic Marine. Are they ok?

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Old 01/11/2008, 01:24 PM   #2
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Billybeau1's Avatar
Join Date: Jul 2005
Location: Dyer, Indiana
Posts: 12,010
I personally don't care for Seachems calcium kit. Haven't tried TM's.

You could buy a Hach for a couple of hundred dollars if it is that important to you.

I have heard a number of good opinions on the new Elos, but I haven't tested it yet. Marine Depot is suppose to start carrying this brand soon and then I will test them.

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Old 01/11/2008, 04:38 PM   #3
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Join Date: Mar 2002
Location: Mountain View, CA, USA
Posts: 88,616
The Instant Ocean calcium test kit works well, although it does take longer to use than the Salifert. I had to let the tube sit for about a minute towards the end of the titration to allow the reaction to catch up.

Jonathan Bertoni
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