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Old 11/04/2007, 08:14 AM   #1
Dingo Dog
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Question Dry test strip tests vs. liquid test kits

The purpose of this post isn't to debate the +/- of the various brands of liquid test kits available. As many of you long-time reefers know, that's already been done here at Reef Central. I'd like to get your feedback on the dry test strips vs. the liquid test kits.

When I test my NO2 & NO3 using the liquid kits the results are zero. When I use my dry test strips the NO2 shows zero but the NO3 shows a range of 20 or greater.

I've used diff brands of the liquid kits (Aquarium pharmaceutical, Tropical Marine and Salifert) and none indicate a reading anywhere near the equivlent indicated by the dry strips.

What's up with that?

Thanks in advance.

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Old 11/04/2007, 08:31 AM   #2
Moved On
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check the experation date on the test strips, they maybe expired, ussually on the bottom of the container. I test wet and dry and yes by trites are zero on both but as a rule the dry test higher then the wet on trates.

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Old 11/04/2007, 08:38 AM   #3
Dingo Dog
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Bob, thanks for your reply. None of the kits/strips are expired.

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Old 11/05/2007, 06:02 AM   #4
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I started with dry strips, 5 in 1. Same data all the time.

Liquid tests show difference within 3 days. Results are very similar for different brands of liquid tests, but all are far from results of the dry strips tests, unexpired too.

My 2 cents.

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Old 11/05/2007, 06:54 AM   #5
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I use dry strips too, the 5-in-1 kind. They also always, always, give a reeding of about 20 on the nitrates even though the wet kit doesn't always say the same.

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Old 11/05/2007, 07:08 AM   #6
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My dry strip says nitrate is 0 but wet says totally different. Both not expired and i really got confused.

60+20gl FOWLR
Tank active till 20.11.03

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