Hey,
For the past few days the mining difficulty has increased. I'm mining Zcash and the value went from 9$+/day per GTX 1080 TI to 6.5$/day.
Is this normal or will the difficulty continue to increase?

Thanks !
It's normal that the diff increase they are adding new gpu all the time there is no shortage of nvidia gpu the supply is unlimited it make sense that the diff is rising