I'm a big fan of hypo as well. Like I said, it did a great job two years ago in my tank when two of my tangs and an angel got ich. The only fish I lost was the gramma and I don't think that was due to the ich. I'm pretty sure I didn't lower the SG
too fast. Almost every article I've read about hypo treatment, including the one on this site, says to lower the SG
to 1.009 over the course of a few days. I took about 9 days to lower mine down to 1.009 and about four to five days into the treatment (not even down to the lowest SG
yet), the gramma was eating fine one day and dead the next. All other fish survived and haven't had a ich problem since. In the most recent case last week I just lost another gramma in my quarantine tank. I had just performed the first hypo salinity water change bringing the SG
from 1.024 down to 1.021. Within hours he was dead. That is why I am wondering if Basslets or the Gramma loreto
specifically are more sensitive to this treatment.