Hi, thanks for responding. I have tested both the brands using distilled water and as per what you said yes they both showed a zero reading, the sera nitrate test kit is nearing the expiry date however it still hasn’t expired whereas the nitrite test kit has a whole year left before the expiry. Regarding the API test kit, It’s brand new and was purchased like just two weeks back however I don’t how to check it’s expiry date as there’s nothing mentioned about the expiry.Tsin21 said:Check if the test liquids are not expired. You can test both brands using distilled water. Both should show 0, if not then that test is faulty or might be expired.
Hmm... if sera is accurate that means my tank isn’t cycled at all... it’s been like almost two months now and the nitrites are still very high... don’t know what I’m doing wrong or why the nitrites haven’t dropped yet..Tsin21 said:
When using the API, when you first put the drops in, do they turn purple and immediately drop to the bottom?SeaWolf said:Why are the nitrite readings different in both my test kits? The API says 0ppm while the Sera test kit says 5.0mg/l
What going on here?
Also I am not able to get any readings for nitrates in the sera liquid test kit but I am able to detect around 5ppm nitrates using the API liquid test kit.
No they don’t turn purple at all, they’re stubborn blue. Don’t change color at all the way the sera nitrite kit does... but the funny thing is I am getting a constant 5ppm nitrate reading using the same brand along with an ammonia reading of 0.50ppm. Strange right?mfer said:When using the API, when you first put the drops in, do they turn purple and immediately drop to the bottom?
I do have seachem stability, however I more or less doubt it’s gonna help or worse what if it competes with the bacteria that fixes ammonia.. I am using fish food to do a fishless cycle so don’t know if that would be a good ideaTsin21 said:
HI Again, So today I visited the LFS to check if there was anything wrong with the test kit alone, I asked them to test the water from the tank i've been cycling for a while now with the one they usually use for their tank and the results were pretty similar to my sera test kit for nitrites, in other words both sera and the one which they were using were high, however nitrates level were also high too like it was shown in the API test result, so the conclusion we arrived at was that the API nitrite testing solution was defected after all... So I guess this means my nitrogen cycle is nearing its completion after all.Tsin21 said: