I had some fish die today, so being I just got them from the LFS
and they have a three day warranty. I tested my water with my AP freshwater kit and didnt find any out of whack readings. When I went to get my warranty fish the LFS
requires a water sample. When they tested the water they said it was way out of whack. They gave me a store credit and said return when I get the water back in line.
I had a second AP test kit that I hadnt opened yet and tested the water with that. When I did my tests I found my NH3
at 8ppm, Nitrites at 2ppm, Nitrates at 5ppm, and PH at 7.2.
I did two 50-60% pwc
's over the last 24 hours, and got the current levels are NH3
< 0.25%, Nitrites < 0.25%, Nitrates 0ppm, and PH at 7.0. I retested with the first kit and it appears that the ammonia and nitrite test solutions were bad as I got 0ppm results on the NH3
and Nitrite, the Nitrate test seemed ok as I got the same result as I got with the new solutions.
My question is has anybody had issues with misleading information from test kits ?
Do people keep a second test kit available for redundancy, and check accuracy of the first kit randomly ?