So the last couple of days I've noticed that my female California Ray has been acting "Strange". She normally is a pacer and doesn't stop swimming, but she paces the front of the tank. But in the evenings after the lights go off She will bury in the sand next to the male. The last couple of days she's been very gracefully hovering with her nose out of the water like she is trying to touch the glass lids. he mouth does remain in the water. As soon as I walk up to the tank she starts her I'm hungry swim and seems fine. What the H--- is she doing? My pH is 8.4, Nitrate are high, but it's because of them, temp is 77 ( I can't get it down without a chiller)