White widow auto flush time?

Hello, first grow here… autos look about ready, the smaller of the three I was gonna feed a week longer or so.

Most of the trichomes are clear/milky on the colas but a lot of the bugs still have long white hair/pistols on them like premature a bit still.

I have been alternating between zero water(very low ppm) and flowing creek water behind the house ph to 6.5 when not feeding. Was going to flush with the creek water Ppm around 200

I don’t know their exact age but here’s a photo of them June 12

Here’s a tasty pic