Half of system ready, other half not.

Thought this would be a better place to post this question.

I have 20-sites aero going right now.

10 plants are ready to be flushed and the other 10 still have about 3-4 weeks left.

They are all in the same system...

SO WHAT SHOULD I DO?

Will doing a week long flush hurt the other 10 that have a month left?

Or can I flush them and then get them back on nutes after a week. Thanks.

yea flush em well, you may lose some weight in the second crop but thats to be expected with a perpetual when ur messin around. I would say flush for 9-10 days then go at it, depending on which half you value more, and how much you have nuted you may need no flush for the first ones, just dim the nutes hard. Depends on how little you want crackly nugs of weed? Good luck either way.