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#1
02-07-2012, 12:18 PM
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Tony, there have been a lot of complaints about the Hanna Calcium Checkers reading really high. I have always found Elos to read about 80-100 ppm higher than Salifert (the Elos alkalinity reads 1-2 dKH lower than Salifert). I have also found old Salifert kits (still within expiry) to be another 80-100 ppm lower than a new Salifert kit. I have no idea which one is more accurate, but I do know my tank is happier when I use the Elos kits and dose according to them. I have all but given up on Salifert kits for calcium and alkalinity. I need to buy some new Elos kits right away here, so it will be interesting to compare them to my old ones.
I'm trying to locate (it's a back burner project) some good independent calibration fluids for calcium, alkalinity, and magnesium. I hear they are out there somewhere. Last edited by Myka; 02-07-2012 at 12:22 PM. 
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#3
02-07-2012, 03:37 PM
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Salifest have a bad batch of calcium or alkalinity test kit 2-3 years ago, as I remembered. So I would not trust that completely.
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Clownfish Collection: Normal Ocellaris, Black Ocellaris, Stubby Ocellaris, Tequillia Sunrise Ocellaris, Red Sea, Black Saddleback, Brown Camel, Orange Fin, Melanistic Clarkii, Common Clarkii, True Percula, True Picassco, Pink Skunk, Orange Skunk, Maldives Clown, TRUE Sebae clown, Akin Clown, Gold Striped Maroon, White Striped Maroon, Latezonatus
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