My first harvest!!

Hi All..
I'm growing autoFlowers.They Are Bigdevil(SweetSeeds) and 60 day wonder(DnaGenetics) and its time for the harvest and flush .But i wonder that for my flush water's ph..So please some one tell me that what should be my flush(plain) water's ph?

Same pH level as the nutrient rich water you use.
Otherwise you might cause a pH fluctuation (harming the plants).

Just flush straight tap water, you'll be fine. Unless you have really fucked up water where you live.

If you use tap water you have to let it sit for 24 hours to 3 days to allow chlorine and various other minerals to evaporate.
And if you feed plants pH regulated water and then feed them tap water (around 7 pH to 8 pH usually) you will cause a pH fluctuation.

look i'm using distelled water.But can you please tell me the final flush water's ph? what should be the ph?

I already told you.
Same pH as when you normally water (with nutrient water if you will).

5.5 - 6.1 Hydro.
6.3 - 6.8 Soil.

Distilled water is free of minerals, not pH regulated.