Thinner seed, I tried that and got a lot more root dry out and poor germination. Plus, because I am hand rinsing the seed mats were weak and more likely to fall apart. I'm currently spreading about 1/2in thick on day1. I'm rinsing twice a day in the kitchen sink with a hand sprayer with fairly high pressure. I could feed on day 6, but a large part of the reason I do fodder is for the cost-effectiveness and there's a significant amount of growth in that 24hours. Besides that, my turkey hens would be very upset if it wasn't tall green grass. They love it, the taller the better. I have the trays loosely covered from days 1-3 until the sprouts emerge. After that they are open to the air. The trays are approx 3" tall and the house temperature is around 70. If anyone has suggestions on how to improve airflow I'd love to hear them. Oh, and I do sterilize the seeds during the soak with bleach. Shoot, I'd hoped this would be an easy problem to fix. LOL