With good seed you should just about get everything you plant to germ. I always add a couple extras incase of damping off, but then have to find a place to plant all the extras..lol..life can be cruel at times.
I like to use the nute enriched grow cubes.. They are dark like soil and made of a neutral ph sponge like material. Once they break the surface and show 2 true leaves, i cover the tray with coco coir to preserve moisture and reduce any funky growth on top of the cube. They are very hardy plants, and will require a rapid transition from regular r/o water to full nute mix in no time.
Full nutes after 6 leaves is my guide. They will grow mass roots rather quickly
and when you transplant, bury them up to just below the first set of branches..they will root every inch you bury.
Good Luck
Here are my babies..
Plum Dandy Roma & Hybrid Big Boy
