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#17
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![]() Quote:
![]() I have an old 713 PO4 kit that I'm not sure if it really is accurate. It tells me my tank has 0.00 ppm which I can't believe even though I got a reading of 0.07 or something on a different tank. I think these numbers are way too low. Maybe just because it's an old, original kit. The alkalinity kit I love - no powder pouches to empty. I did find one of the syringes didn't seal well with the tip and I would have trouble with the fluid leaking out as soon as I lifted the tip out of the reagent bottle. Luckily when you buy more reagent you get a new syringe and tip too, and I haven't had this problem since. I also have a calcium kit that I hate. It gives me readings I can't believe - like 450 ppm on a tank with no dosing using H2Ocean salt. That's not even possible. The calcium kit also uses only 0.1 mL of sample water so even with careful measuring it would be easy to measure 0.11 mL or 0.09 mL which would cause a 10% reading inaccuracy or about 40 ppm when measuring calcium. I sold this kit - I have used Elos for calcium for years and much prefer this kit over the Hanna or Salifert. I might try a new PO4 checker sometime... |