Can 20ppm nitrate kill inverts?

[ILikeFish!]

My cleaner shrimp just died randomly right now and I’m assuming it’s because he was old because we’ve had him for a year and when we got him he was basically full size already, I also have another shrimp and he’s fine. but I’ve kind of got busy lately and wasn’t able to do a water change so I checked my levels and it was at around 30-20 ppm nitrate. Could this have caused it or was it most likely old age that caused him to pass?

 

[Sdot]

My cleaner shrimp just died randomly right now and I’m assuming it’s because he was old because we’ve had him for a year and when we got him he was basically full size already, I also have another shrimp and he’s fine. but I’ve kind of got busy lately and wasn’t able to do a water change so I checked my levels and it was at around 30-20 ppm nitrate. Could this have caused it or was it most likely old age that caused him to pass?

No... not at all

My nitrates have been as high as 35 in the below tank... my goal is to keep nitrates at 15.

 

[ILikeFish!]

.

 

[gbroadbridge]

My cleaner shrimp just died randomly right now and I’m assuming it’s because he was old because we’ve had him for a year and when we got him he was basically full size already, I also have another shrimp and he’s fine. but I’ve kind of got busy lately and wasn’t able to do a water change so I checked my levels and it was at around 30-20 ppm nitrate. Could this have caused it or was it most likely old age that caused him to pass?

My understanding is that high nitrate levels cause metabolic disturbances which over time can cause problems.

'High' is a relative term, but I believe it would need to be consistently over 50ppm to cause long term issues.

 

[Dbichler]

20 ppm of nitrate is a good number. I’ve had nitrates near 100 and never had issues with inverts. Wouldn’t suggest it long term though as suggested above.