Some of my plants, not marijuana, almost repel water initially. The water runs down around the outside of the rootball and runs out without soaking in. Often this happens when the soil has pulled away from the edges of the pot. I find I need to water those plants several times over a 10-15 minute period to get the soil to hold onto the water and drench the entire root ball. You can catch the runoff and reuse it so you don't waste nutes. Within an hour of watering, you should see your plants recover if they've gotten the water they need. The leaves will perk right back up. If they haven't, either it isn't water that's the problem or the roots didn't get the water they needed..... or you were too late. But the plants above look like they'll be fine. Based on my experience with plants in general only, not specifically this plant.