Upset Lion fish upside down near the surface?

[Ticketyboo]

Hi all, any input would be appreciated.

I swapped the contents from my 50 gallon FOWLR tank into a 180 gallon tank and added an extra 100 Lbs of cured live rock from my 90 gallon. I took 2 weeks doing water transfers, exchanging water from the 180 tank into the 50 gallon tank doing 75% water transfers daily.

All was fine and dandy until i started moving the live rock around and i stressed my lionfish out as i nearly started a rockslide down on him

Anyway, now i see what looks like ICH on both lions, a few white spots on its abdomen and more on its lower feeler fins. This morning i woke up to find one of them swimming upside down above the power head...... but as soon as they saw me, they both jumped back into shape and wanted fed.... they eat lots and i feed them a silverside a day or so....

... any thoughts? is it ill? stressed? p****d at me ? is it ICH? someone advised me that lions do on occasion have white spots on them, why the upside down circus act? why above the power head? its a pretty strong power head, rio 2100, but they are eating pretty healthy and i did add some garlic into the fish last night and this morning...
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... thoughts?