OK here are 4 measurements off the same water sample from a freshwater planted tank:
Sample 1: 1.34 ppm
Sample 2: 1.06 ppm
Sample 3: 1.35 ppm
Sample 4: 1.35 ppm
After running sample 2 I realized I had not got all the reagent powder into the reaction vial as some of it spilled. So far it seems that the readings are fairly consistent from one measurement to the next if I through out the one bad measurement. This says nothing about whether the measurements are accurate or not.
Next: to repeat the measurements with a saltwater sample.
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120 gallon sps/anemones/LPS reef since 2004
Apex controller
8 x 54 watt T5 PowerModule
Herbie's silent overflow system
Jebao DC 12000 return pump
Jecod CP-40 Cross-flow circulation device
Mini Bubble King 180
Barr Aquatics calcium reactor
Bucket fuge
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