Nyos Nitrate

[sublime250]

Not sure if this is the place for this but.

I'm having difficulty reading nitrates above 25mg/l with this nyos reefer nitrate test.

I do aquarium maintenance and I've come across tanks that I know have elevated nitrates.

This highest reading I ever get is 25 (bright yellow)

I've tried this across multiple tanks, I get lower reading but bever higher.

When it reads 25, API test will read 100+

I've tried diluting my sample with half newly mixed saltwater with no nitrates (tested with nyos and API at zero) and half the tank sample that previously read 25 mg/l and it again reads 25.

I know 25 is high for reefs, I'd just like to have a mark to work from to gauge my efforts to reduce nitrates in new client tanks.

I'm at a loss as NYOS doesn't seem to have us based customer service from what I can see.

Thanks

 

[HolisticBear]

This doesn't prove anything, but I've recorded 65 on my QT with NYOS NO3. It's possible it's a bad test kit, that seems to happen with every brand.

 

[Randy Holmes-Farley Verified Community Expert]

I've not used this kit. All I can suggest is dilute again and again until you get a reading lower in nitrate.