It might take 4 weeks for the male pollen sacs to show up but by that time the other clone will have plenty of pistils to make seeds. Just make sure you start spraying one plant when you turn 12/12 don't wait to see pistils . also 30 ppm will work perfectly about 600 ml bottle fo r 20 dollars will make you thousands of seeds. So you work out it costs 10 dollars a female seed then you can make 20 grand in female seeds for 20 dollars. Its even worth doing it to preserve your fav strains.I could do that with two purple haze clones aww damn I’m keen to give this a crack lol