Minecraft wiki entry for Fishing, associated text: Once the bobber hits water, the waiting time is determined. This time ranges from 5 to 30 seconds (100 to 600 ticks at 20 ticks per second), reduced by 5 seconds per Lure level. The Lure enchantment affects both the minimum and maximum time. If it causes the wait time to be less than 0, a new wait time is generated in the next tick.