Exact same thing happening to me. Wondering if the rubber thingy between the glass bottle and plastic container is causing the issue?
I made a batch of hummingbird nectar, filled two different feeders. One I have had for several years. And a brand new one, which has been cleaned. The brand new one turns cloudy, while the same batch of nectar in the older feeder stays clear. I’m confused.
398 Fischer Rd, Fort Mill, SC 29715