Plant Irrigation System \"Hydro Crystal XL\" - Better watering, safer dosage Did you know that more indoor plants are drowned than dry up? With our irrigation system \"Hydro Crystal\", you are on the safe side. The shapely watering ball always supplies your plants with the right amount of water, directly at the plant root. Our plant watering system is suitable for both container gardens and potted plants, and even for window boxes. Leave your plant irrigation to our professional system and relax on your short holiday. Your neighbour will be thrilled, too!