Yes, I have another question. My first new hummzinger ultra is on it's way to my front door as I speak. I noticed that many of you have tons of hummers feeding from your zinger. I have two (a female and male). The amount my feeders change from first fill to the next new fill is not visible to my old eyes, even when the male visits 10 times in 45 minutes. This new feeder holds 12 oz. of nectar. I'm guessing that this could last all summer, if it didn't go bad, lol. My question is how much nectar do I need to put in this ultra, and stll have the hummers be able to reach the nectar, if I'm changing out evry two or three days?