Hanna Instruments High Range Nitrate Checker HI782
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Measurements with a range up to 75.0ppm
Less complex laboratory grade accuracy - Requires only 1 reagent
Simple, intuitive digital operation
Compact and precise whether at home, at work, or on-the-go
Nitrate is the final step in the Nitrogen cycle. Excessive amounts of nitrates in saltwater aquariums facilitate the growth of undesirable organisms such as algae and dinoflagellates. The HI782 is a simple, accurate, and cost-effective way to measure nitrate from 0.0 to 75.0 ppm (as NO3–) in your saltwater aquarium.

Top reviews from the United States
Take the guess work out if your parameters
I should have purchased these years ago. I am just getting back Into the Hobby and these Hanna Checkers were suggested to me on a reef forum. At around $60 each, It is a bit expensive, especially when you consider buying a Hanna checker for each parameters you are testing. The thing is, knowing exactly what your reading is, and not having to compare results on a color chart is well worth the price. I am able to know exactly what my metrics are abs can make decision based in confidence instead of guessing. Highly recommended investing in these checkers!
Easy to use as well!

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