Unfortunately this morning even though I was expecting it, found Egor had passed away over the night. When I lifted her cave, it looks like the rest of the babies also died within their eggs. I lost all the little ones I had in separate containers. Will do a water test today after work, but I have a feeling, being it's such an old seasoned tank, the nitrates contributed to the little ones deaths. Puzzling though how they could develope to hatching and then be affected by this, if it was indeed the cause. I'm sad! My last octo for awhile.