my ninja dualbrew pro coffee has a bunch of gritty sediment in it, even with the permanent filter, help?

DIAGNOSIS: You're likely using coffee that's ground too finely for the permanent filter.

FIX:

1. Switch to a slightly coarser grind of coffee. A medium grind is recommended.
2. Alternatively, you can use a paper filter inside the permanent filter basket.

IF THAT DIDN'T WORK: Do not use both a paper filter and the permanent filter at the same time. This can cause grounds to clog and water to back up. Use one or the other.

HEADS UP: Sediment is a common issue with fine grounds and permanent filters. Adjusting your grind size is the most effective solution.