How to tell when to start flushing

I am getting close to harvest. Plants are in their seventh week.
I changes the nutes yesterday, and almost decided to start flushing the plants.
I know you are suppose to do this about a week away from harvest, but many of the colas have yet to come together.
I am starting to get brownish hairs on some of the buds as well.
I may have messed up. I had not intended to bloom the plants in the closet. These were clones maybe 10-12 inches high I had put into the 12-12 environment to check the sex, but they started to show nice bud production so I left them in.
Here is the tricky part. There were several strains of clones. Some mostly Sativa, one mostly Indica.
The Indica plant had many brown hairs, but the Sativas are acting like they want more time to grow.
So the question is, when do I flush?
I checked the tricombs and all of the Sativa's were still clear, but a small number of the Indica's have started to cloud with a rare amber one.
Should I flush for the Indica plant? Do I wait another week and flush for all of them?
I am afraid I may be forced to pick the Indica before I get to flush her. How big a deal is that?
I could try and remove the Indica to be flushed on its own, but it is in a 4" Rockwool cube that has almost disintegrated and is buried in Hydroton.
Any ideas?

Im in the same predicament,im planing on letting the ec levels drop,flush with clean water for a few days keeping an eye on the haze,chop the kush then add ripen to the hazes.
Hope this helps.

Trichomes are small appendages that look like hairs, they are produced by marijuana and other plants. Some trichomes on marijuana plants develop a resin gland at the top. These trichomes are a rich source of THC, and monitoring them will allow you to best judge when the plants are ready for harvesting.
On marijuana plants, trichomes with resin glands form in the highest concentration on buds. They start out clear, turn a milky color, then turn amber (light brown). To best judge when to harvest, wait till about a week or two before the expected harvest time (just before you go to water only feeding) and look at the trichomes on the largest buds on each plant daily

There's something called clearex(something like that) and it's supposed to flush out fertilizer faster than using just water...............I'd rather use just water if I had the time, but if you only have a few days maybe it's worth it.
I've harvested without flushing and the buds taste bad and crackled

Can someone jjust confirm that flushing means giving your plans a heavy sup of clean water to flush out the nutrients altogether ?? stoned moment haha harvest time in 4 weeks hopefully :d

thats exactly what it means wolfie

I would say in such a case you have to guess and start flushing if you see them go milky(or if they are all milky, depending on what you want as endresult)
but I have no experience with indoor

im a dunse haha i always knew what it meant but stonedness got me thinkin an i confused myself lmao !

lmao...man i can totally relate to that..no worries its just a brain fart!

WTF IS THIS FLUSH THING ???????????

Ha ha dats a gud way to put it

Does it help if the nutrients your using are organic?

Flushing - Giving the plant a good sup of water to clean the soil of fertilisers before harvest, you woul want to start about a week before harvest so pick your times right

yes with organic there wont be as much salt build up, but its still very important to to get it all out of its system..organic is the way to go imo

Yes and im using plagron Alga Bloom which is 100% organic

start flushing in 2 weeks for me wont be long now

OK I dont flush & havent in years.Heres my thinking,,,why starve ur lady right b-4 shes bout ready to put out?

First thing comes to my mind is why flush unless u put in to much.Me i just really lighting up on my nutes last 2 weeks or so.I also dont cure & produce very very tasty nugs & no chem taste at all.I know Im not the norm but do ok.

also no green/grassy taste because of the lack of curing?

the basic purpose of flushing is to make it smoke smoother, unflushed bud is harsher to smoke(probably also healthier, but that's just a thought, no evidence for that)

but I don't flush either, don't need to outdoor, especially since I've never used bought nutes, only some homemade nutes from nettels in veg

Dont get me wrong I have flushed & tried every way to cure including water cure.I am not a novice by any means.As for the green taste none to speak of unless I pull early.I try to wait until most of the chlorophyll is used up by the leaves.
This is not for everyone but works for me oh yea natural raw sugar last week or so helps.

Can you explain wat you mean by natural raw sugar coz im close to harvest and if its going to improve my buds id like to give it a shot

Apple juice diluted works great & also molasses.I normally use bout a 1/4 cup per gallon of water for apple juice.Never did use molasses but know lots who do.

heard of molasses but not apple juice

say i flush for a week will i give it on one of her final days ??

I would do it twice in that week hope it helps.