NYOS test kit apparently completely not working. I was dosing nitrates and thought it was not working. Just tested with api and showing 40 ppm. It was 1 yesterday. Do I need to do anemergency water change? Very expensive fish, crabs, shrimp, snails.
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Thatis what I thought, but I actually dosed 40 ppm nitrates today and the nyos shows 1 ppm. My api shows 0 in my other tank.I would take the nyros test kit over api any time of the day…just my 2 cents
Yes I have run ultra high nitrates before, but these fish and inverts have lived their entire lives in 0 nitrates until today. I just did another test and counted how much nitrate I have put in. The api looks like it is slightly over 40. I have put in about 55 ppm in 4 days. Most of that today.I don't think you have an issue. 40 isn't that high if you have fish only. Maybe a water change when you can get proper water. I really wouldn't stress too much over it.
If test kit is faulty then how are you measuring 40ppm?
*Edit: disregard question, just re-read your OP.
Thanks for the replys. I dosed 15 ppm the last 3 days, but 40 today. I am going to do a 20 percent water change with tap water and hope it is all good.I agree with other comments that 40ppm is not that high.
If you put in 55ppm over 4 days, then the swing is only about 14ppm/day, so I would not worry to much.
There is no need for an emergency action.
I would recommend a bit more frequent water change in the next few weeks if you get a chance.
Interesting turn of events, you appear to be right. I actually have 2 different api nitrate test kits. Testing the exact same water, 1 shows 40 and the other 0. So I have an api showing 0, another api showing 40, and nyos showing 1 to 2. I have dosed 55 ppm and am not 100 percent which to believe.I would take the nyros test kit over api any time of the day…just my 2 cents
250 gallons of water so it will be tap water and a big ordeal.
I am not afraid of tap water, done it plenty of times. I have corals in qt to go in and I have a million dinos. So need nitrates up a lite.
This is even less of a concern then some peoples tap.
