It is most likely just particulates that loosened up when you rinsed out your filter. This can also happen from just turning your filter on and off. I would not worry about it filters almost always spit something out when you turn them on or off or service them
It is most likely just particulates that loosened up when you rinsed out your filter. This can also happen from just turning your filter on and off. I would not worry about it filters almost always spit something out when you turn them on or off or service them