Help! My squid won't bury!

[scolopes]

I have several E. scolopes squid, and lately they are not burying well during the day like they are supposed to. Their eating has slowed and two have died (both of my females). Our tank chemistry is:
pH:8.1
Ammonia: 0
Nitrates:0
Nitrites:20-40
Salinity: 33-36
Temp: 23 degrees C

Any ideas on why they are feeling so bad? could there be other chemistry conditions I am not checking that I should?

 

[cthulhu77]

I would pm Thales...he seems to be on top of this sort of thing. The temp seems to be a little off, what are your lighting conditions?

 

[DHyslop]

Did you switch your nitrite and nitrate values accidently while typing? if not, nitrites that high are fatal.

Dan

 

[scolopes]

I did switch the nitrates and nitrites, sorry