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RE: Erroneous test kits

I responded to Craig offline about this but, prompted by the below email, I
thought it might be worth sharing my experience with the list.

I too bought the Red Sea CO2 test kit - & I too got results of ~80ppm in
water that, according to the pH/KH relationship (& a realistic assessment of
the efficiency of my DIY CO2 set-up), actually had around 3ppm (KH=3.5,

I (& some other people I know locally in the UK) also bought Red Sea Nitrate
kits which always measured 0ppm when a number of other test kits (& months
of experience of monitoring Nitrates throughout water changes etc.)
indicated Nitrates of the order of around 40ppm were in fact present.
Fortunately I felt a lot more confident about those (erroneous) results &
took the kit back to store for a refund.

Maybe I was just unlucky but, personally, I won't buy any Red Sea products


-----Original Message-----

Date: Thu, 6 Apr 2000 21:22:21 -0400
From: "Wayne Jones" <waj at mnsi_net>
Subject: Re: CO2 test kit and pH 

Craig wrote

Several people responded to my pH/CO2 problem. The overwhelming response was
that my CO2 test kit was wrong. So I tested it by taking some of my "70 ppm"
water and aerating it for about an hour with an air stone. The results: the
aerated water measured out at 40 ppm CO2. So I'm chucking my Red Sea CO2 kit
and just going back to using the chart. Thanks for all the input.

Wayne says

When I first started in this hobby I too bought this test kit. Mine turned
turned out to be completely bogus too. Over the past few years I have never
heard anybody ever say anything good about this test kit. I cannot imagine
that the company that makes this product is not aware of this. Surely it is
a simple matter to verify the test kit using known reference samples. If
they are aware of the problems with the test kit and have done nothing to
correct this problem would that be fraud? Why is it necessary for the
aquarium industry to try and make a living by selling aquarium people
products of little or no value. How much more expensive could it be to make
a test kit that works?