Forget that ice cube nonsense and bring that pot over to the sink and water it until at least a quart to a half gallon of water runs threw that pot. Naturally, I assume it has a hole in the bottom. Then lay it in the sink and let it drain for a while. Then water it again like that in about a week or so depending upon your conditions and what type of medium it is potted in. If it's bark I'm guessing once a week, if it's in spagnum moss wait until it becomes crispy on the top and then water it again.