Question about Nitrate Level
It could be that a small change under 10ppm may not be discernable or like someone posted your test kit maybe out of date. I think with apI most of there test bottles are good from 2 -3 yrs. depending on the test. The last two digits on the lot number is the year of production. I recently tested with high range ph with a bottle from 99 and from its results I thought it was off. I replaced it with a bottle 07 and found that the bottle from 99 was indeed off. (it would display a level but stay on that same level despite an increase or decrease where the nonexpired test displayed different levels as it should. > > Today was PWC day. I tested the water with API liquid before and after PWC. Before the PWC Ammonia was 0, Nitrite was 0, Nitrate was 10 and pH was 7.4. I did a 25% PWC with vacuuming the gravel. After the PWC I tested the water again and the results were the same. I then tested my tap water and the Nitrate was 0. I realize that 10 is not a bad level for Nitrate and there is no reason for concern, but I expected it to have dropped a little. Maybe it did and it was not discernible on the test. Does anyone know of another reason why the Nitrate might not come down? > > Jimmy McHaney > Husser, LA > > > > > [Non-text portions of this message have been removed] >
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