Just got one of these and boy am I confused. Was running into some issues with my LPS and realized that somehow my calcium took a dive ( thinking my doser needs calibration). Anyhow, I tested with red sea and got less than 300. Got 364 from Hanna. I don't remember which one I dosed off of but when I rechecked I got a reading of over 500 on red sea kit. When I checked my Hanna 36 hours later it said 364 still. I know for a fact my tank doesn't consume that much calcium. I rechecked and used distilled water instead of rodi and got 423 this time. I followed the video and the written directions step by step but can't figure out what's up.
Hanna nitrate checker accuracy
- Thread starter Dmac
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