You can always put a plastic drip tray under your pots and use it for a water reservoir. I put my cyms in 1/2 gallon and gallon plastic tea or lemonade pitchers in hydroton. I did NOT put drain holes in the pitchers. After I soak them, I pour the excess water on my geraniums and other house plants, leaving about 3 or 4 inches of water in the bottom of each pitcher. I like the handles on the pitchers, makes moving the plants a bit easier.