Anyone know when this plant should flower it says between 3-4 weeks and I'm nearing the end of the third
Is it an auto or a photo ? You can hypothetically veg a photo as long as you wish before flipping to flower, but bigger plants need more food, more water, more light, larger areas n bigger pots so you have to keep tht in mind n flip when you've reached your own threshold...I've always heard they'll double to triple in size in flower so I'd flip when they're roughly half the size of what you can handle with your setup if that makes any sense.
As far as the purple - I wouldn't worry yet. They look healthy n greenlikemoney pretty much summed it up. If you start seeing some other issues/ symptoms then you should look into a solution, but for now don't try n fix what's not broke.
I'm in a similiar situation (just got my card n starting up my garden) so I can't offer much more than that. Btw, don't take the trolling on ur other thread to heart - this place is filled with great people they just like to have a little fun.
Good luck with ur first grow n keep us updated on how it goes.