Rockwool is the way to go. Paper towels can drown the seeds if you are not careful. Plus moving them to another media has its own risks. I DO use paper towels to test viability of seeds that I have made but after I get my results I just throw the seeds away. Before you use Rockwool it MUST BE...
Sounds good Bogwort but as always there are factors that influence when flowering starts. I flowered my last batch at only 2 weeks old and 5 inches tall (limited vertical space). It took 3+ weeks before any female flowers showed (batch is all female). I guess it means that the plants need to...
I would stop watering them for a while (a watering cycle or so) to let the cube dry out a bit. Pick up the plant and you can get an idea as to how much they weigh when wet. Then let them dry out a bit and check the weight of the cube again. Just don't let it dry out completely! Sometimes this...