The wide spade-shaped leaves looked wrong. They were still green, but thicker, and with a golden undertone. Someone had put distilled water in the hydroponic supply instead of the mineral-rich solution long-stability hydroponics needed. They could get away with it for another week. Maybe two. Then the air-recycling plants would start to die, and by the time that happened, the cascade would be too far gone to stop. And if they couldn’t get the right water to the plants, he couldn’t imagine they’d be able to set all the mechanical air recyclers going. Someone was going to have to do something
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