Man -- looks like the Palmer and I aren't meant to be... the second piece also RTN'd today. Even more surprised given the amount of encrusting.
I don't think any single SPS has given me as much of a challenge as the Palmers.
So, here are my learnings and theory to help the next lucky recipients of this amazing piece...
Things that did not make a difference to prevent RTN:
- Flow -- tried high, medium, low
- PAR -- High @ 350-400PAR, Mid @ 250PAR, Low @150 PAR (though lower PAR seemed to have made the piece last longest by a week or so)
My theory on why the piece RTN'd...best guess is Alk swing / shock. When I took on the Palmer's, I was running 9.5... I believe
@Coral reefer runs at about 8. So, likely tanking the pieces straight from
@Coral reefer's tank and into mine, gave the piece(s) enough of an Alk swing to stress the milli. And we all know milli's don't like stress...
The first time, I think my system was running closer to 8.5... but then had a 1dkh swing before RTN.
And unfortunately, RTN from alk swing stress doesn't show for about 2 weeks... Aaaaaaand, my latest attempt is at the 2 week mark, despite having my alk fixed about 8.8 +/- 0.12 the entire time.
Seems to me, this particular piece is extra sensitive to alk swings...