Yes.
70 days = 10 weeks. that would mean 2 weeks to mature & 8 to flower.......ain't goin to happen.
Now, if they said 65-70 days of flower, that would be believable.
Have fun
I just had the same with my northern lights.
2 seedlings, one was fine the other yellowed just like yours.
Reduce the light till she turns green again.
Expect stunted/slow growth from the shock. My yellow girl is green now but not 1/4 the size of the other :sad:
Good luck
You chucked them?:wall:
If they were males, you could have waited a week to make sure, and not have thrown out girls.
I didn't see any little stems in your pics & the shape of the "balls" is different.
In the future I recommend that you wait until there's no doubt that they're male before...
I'd re-pot those seedlings & bury them to just below the leaves.
They need more light, that's why they're "stretching".
If you can put them in all day sun, that would be ok for now.
That purple light is not much good.
For a light I'd recommend something with Samsung lm301b or lm301h chips...