How long should flower take?

I have a complete veg chamber with inanely healthy huge plants. I took clones of them four weeks ago, which stabilized two weeks ago, and I have been putting them in a tupperware tub every night for 12 hours to sex them (while I construct my bloom room.)

They still have not produced sex flowers. I have determined this is probably because some light was penetrating the mostly-opaque lid of the tub. So, I've covered the whole thing in dark tape and no light penetrates it now. How long should I expect to wait before I'm seeing sex flowers from here?

10-14 days max sooner if you look closely

10 days sounds right to me, never seen it really take much longer.

up to 2 weeks

I thought you were asking how long does it take to flower.You are asking how long it takes to show sex.As long as no light is leaking in then 7-14 days.

sexing takes @7-14 days sometimes faster if the mom plant was a clone that was from a plant already in flower. My mom is a clone from a plant that was into week 4 of flower before my primary mom got mold and I flowered her out and took a clone from her at week 4 of flower. Now all my clones show flower/sex @ day 3-5- of 12/12. Very fast but I don't have to worry about sex with clones. thats why you keep a mom plant! their clones flower very fast!