Agree with above. Flower spikes usually die and turn brown when the flowers die.
We say your plants are dehydrated because they have lines, wrinkles, running along their length, and they are dull green. If watered properly the leaves are smooth and shiny.
Dehydration can be caused by not watering enough, or by dead roots not being able to absorb water. It is best to water them as soon as the medium dries out rather than let them stay dry for more than a day.
When were your plants last repotted? If you bought these recently in bloom, they're due for repotting. If you've had them a while, and haven't repotted in over 2 years, they're probably ready for repotting. This will give you a chance to look at the roots. Phals aren't set back by occasional repotting, so if you ever have a question about their root health, it's fine to unpot them to look at the roots.
Often plants that look like yours need good long soaks to take up enough water to rehydrate. It can take days, or even several weeks, for the plants to absorb enough water for the wrinkles to go away. Sometimes the wrinkles are bad enough they don't go away completely, but new leaves should grow out normally.
If your roots are OK, I would soak dehydrated plants like yours in water overnight. Then let them get just dry before another overnight soak. Many people in lower-humidity homes water by soaking for hours to overnight. The watering interval depends on how long it takes the medium to dry, which depends on the temperature, relative humidity and air circulation in your growing area.
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