First Harvest - I'm thinking it's close.. Thoughts?

First time grower here. Running a dwc bucket setup using a Spider Farmer SF-600. This one is an Autoflower, Sour Stomper.. Supplier website lists it as a 60-65 day from sprout, I'm on Day 70 (I understand 60-65 is absolute best case).

I am pretty bad at trichome inspection with the 30-60x microsope, but I haven't really seen too many (if any at all) amber trichomes. It's mostly cloudy (maybe 80-90%?) with a few clusters of what I believe is clear. I haven't noticed a ton of bud growth in the last 10 days (pics below), but most of the pistils on the upper colas have turned brown (80-90% rough estimate). Has my harvest window begun? I am strongly considering partial harvest of main colas, but I don't want to chop early if I will miss out on tons of growth/potency.

Any advice?

Close, two weeks.

Never rely on ANY breeder estimates ... give it up to 2 weeks , you are pretty much near end.
Most of the pistils have receded. Usually a range of 80% is about when to chop.

Drop cycle to 10/14 for this week , shorten the on time to trick plant into force finish. You can just water as necessary til end.

Budzbuddha said:

Drop cycle to 10/14 for this week , shorten the on time to trick plant into force finish. You can just water as necessary til end.

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I'd go with this advice for a week and see what 7 days brings.

Probably done I'd say by then.

You was heavy on the feed I see.

Yeah wait another week.

KK26 said:

I'd go with this advice for a week and see what 7 days brings.

Probably done I'd say by then.

You was heavy on the feed I see.

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Only issue is that it shares a tent with a longer strain who still wants lights. I think I will give it 3-6 days though then put it in the dry tent without lights for a day or two.

Res has been set to about 500 ppms or lower most of grow. I’m pretty sure there was a cal-mag issue that I couldn’t quite get a hold of (prob the pH issues of a 2gal bucket), also light burn for sure.