Which device is going to give me my most accurate, low range, readings on nitrate....the Hanna Colorimeter...or the Pinpoint Monitor?
http://www.americanmarineusa.com/nitratefacts.html
http://hannainst.com/usa/prods2.cfm?...ode=HI%2093728
I suspect that few people have used the colorimeter and that the monitor is more widely used.
I think the colorimeter will cost less up front, but run $.60 per test. The nitrate monitor will cost more, have little usage costs...but I wonder if the probe ever needs to be replaced...?
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400 gal reef. Established April, 2007. 3 Sequence Dart, RM12-4 skimmer, 2 x OM4Ways, Yellow Tang, Maroon Clown (pair), Blonde Naso Tang, Vlamingi Tang, Foxface Rabbit, Unicorn Tang, 2 Pakistani Butterflies and a few coral gobies
My Tank:
http://www.canreef.com/vbulletin/showthread.php?t=28436