can anyone give me advise on what test kit to use for nitrates ive got two tests and they both give such a different test result! ive got a fast test which is just add a powder to 5ml of water and compare the colour this measures 10ppm for nitrate, i have a tetra test witch is measuring greater than 50 ppm so which one should i believe ? or can anyone recomend a better test kit available ?
water tests
- Thread starter paulhaff
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