if the leaves are leathery and the plants are growing keikis, i'd think they're a little stressed. increase your watering *a bit*. don't flood them all at once.
just put the plant in the sink, water it there, let it drain and put it back. i wouldn't leave the plants soaking in any amount of water for any appreciable amount of time. try not to share water--if one plant has some sort of ickiness, it could spread to the others.
but whatever changes you make, make them gradually and see how the plants respond.
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"Apart from the utility of binomials for standardizing reference for effective communication,
Laelia Speciosa is a tad easier to pronounce and spell than its Atzec name
chichiltictepetzacuxochitl."
--Alec Pridgeon