Yep, when you feel your a couple weeks out. But that’s the hard part in my opinion, is knowing when you’re in hat window. That’s why I like living soil. You don’t have to worry about it. Just for a reference, I think these have reached a couple weeks to go. No amber trichs yet though.
I’m new and made a post about my thoughts on flushing the other day. Some do it some do not, personally I don’t see the benefits in it so I’m not worried about it.