Review of Colombo Nitrate and Phosphate test kits

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  • Graeme
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I found the whole layout of the test kits very customer orientated.  It's very easy to work out what to do, with a set of detailed paper instructions, laminated card with instructions on one side and the colour comparator chart on the other.  Also, on the back of the box are the same instructions, and on the side is the optimal value and a QR code which takes you to a YouTube video that shows you how to perform the test. 

It's excellent, for beginners especially.

Both Nitrate and Phosphate are low resolution.  They're both the lowest range I've seen (we'll noticed at least).  They cover the range we're interested in, and for nitrate, it gives a finer range than any test I know of.

I have always had zero nitrates, so I expected this to show zero, which it did. I had tested high phosphates, but with an out of date D-D kit, so I have nothing to compare to, but this result seems right, as I do currently have a little bit of cyano.  This ratio would put me in the right redfield ratio .

OK, here are the photos...
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fr499y

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Reply #1

My LFS has these test kits in and rates them highly. They also released live phytoplankton and a few other goodies that look good.

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HK_Fuey

  • Graeme
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Reply #2

@Colombo here's some feedback now I've been using these more often:
For the Nitrate kit, the colour of the liquid is a much brighter pink than the card shows.  Could the card be updated to a closer colour match?

For the phosphate kit, the colours are quite close between readings.  Could something be done to make the steps clearer/more dramatic ?
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