Planted Tank Guru
Join Date: Sep 2011
Location: Willimantic, CT
I doubt it's the IAL cause you can leave those for weeks without any issues. People with shrimp tanks leave them until they turn into skeletons.
And I heard otto's are super sensitive so it's very possible the nitrate spike caused it to die. I wouldn't go overboard on the nutrafin cycle though. Not sure how well that actually works.