I am absolutely extatic been sprouting seeds in paper towles, dirt, water popping, and the results are in I am switching to grotan rockwool. So I have used em in the past with other annuals so I pop 2 seeds into each cube and popped em in my grow dome and all 5 varieties sprouted no fuss no muss no soaking seeds overnight all I had to do was pH my water to 6.3 and soaked the cubes and plant the seeds and 4 days later all 5 cubes had both seeds sprout up still waiting on the paper towel to pop I see the start of the taproot but still slower. I'm gonna try another 5 sets today see if I get the same results using rockwool