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Test Kits, are they reliable?


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i never was a believer in them(AP), but recently decided to test them againt salifert . i compared the calcium and KH tests.....i just did a retest and with the AP test kit KH was 10dkh and with the salifert kit it was 10.8 dkh...the calcium AP kit showed between 420 ppm and with the salifert calcium kit 430 ppm........i personal like the salifert kits , but not the price... so i use both brands. i use the AP kits twice a week and the salifert once a week to stretch out the salifert kits......IMO thats the best way to go...HTH

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