Trying to read spawning reports for Julii cories and an ad covers the report. Cannot seem to remove the ad to view the report.

Another thing to check would be water circulation. Coming to the surface could be a sign of poor oxygen levels at the bottom. Filter flow dropped off, power head stuck, reduced surface agitation would reduce the oxygen at the bottom. I don't know if low oxygen levels would cause your problem, but it...

I have well water. My pH is at 8.3. I have CW021, C.Aeneus, C.Ehrhardti, C.metae, C.Paleatus, C.Panda. They all are doing great and spawning. Your 8.0 pH should not be a problem unless you want wild caught fish.