The correct spelling is "halos".
The plural form of "halo" is spelled "halos."
The plural form of halo is either halos or haloes.
The plural of 'halo' can be either 'halos' or 'haloes'. Both are accepted.
Halos
The plural way to spell studio is studios.
The plural is "emeralds."
The plural is resources.
The plural is cherries.
The plural is hooves.
The plural is cantaloupes.
The plural is roses.
The plural of "bridge" is "bridges."