It sounds like you have created a mod for FS25 called "Water Tank v1.0" that simulates a regular tap in the game. Players can interact with the water tank to access water, similar to using a tap. The mod is priced at 3000 in-game currency units, making it accessible to players at a reasonable cost. This feature adds realism and functionality to the game, allowing players to manage water resources more effectively on their farms. It enhances the overall gameplay experience and provides a new element of gameplay mechanics for players to engage with. Great job on developing this mod!