ive been trying a lot of different sprouting techniques and they all failed but finally i have one that works very well. i have a hydrodome with a tray and an inch of water in it. the rockwool cubes sit in the water until the seeds hatch, come out, and grow roots. this takes like 3 weeks. it also has been taking 3 weeks for the water to get nasty in my reservoirs, which i got hydroguard to fix. but i just thought of something. the tray of water that the seedlings are in gets tons of light and it is at 79F. surely i am about to get nasty garbage smelly water and my seedlings roots will start out with root rot! i should add some hydroguard to the seedling tray shouldn't i???