I am not sure I agree with the others about how ELOS is inaccurate... During my time of SPS issues, I had taken water samples to my LFS, as I thought maybe my kits or refract are out of whack. My LFS uses Salifert and API, and when they tested, the results were accurate to what I got using exclusively ELOS.
In saying this, I use ELOS without any complaints... I have also just tried API and Salifert for some things, and they seem fine also.
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Setup: 180G DT, 105G Refuge (approx. 300lbs LR, 150lbs Aragonite)
Hardware: Super Reef Octopus SSS-3000, Tunze ATO, Mag 18 return, 2x MP40W, 2X Koralia 4's Wavemaker
Lighting: 5ft Hamilton Belize Sun (2x250W MH, 2X80W T5HO)
Type of Aquarium: mixed reef (SPS & LPS) with fish
Dosing: Mg, Ca, Alk
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