I have just finished reading "Sprouts The Miracle Food" by SteveMeyorowitz and want to pass on some veluable advice that I learned.
Because the sprouts are grown without soil they could be deemed to be deficient in minerals. To make up for this he suggests that you add some Liquid Kelp at soaking and sprouting stage and the benifits will be huge.
Soaking. Add a few drops of the liquid to the seeds during soaking.
Misting. Mix enough kelp with water to make it look like dark tea. Remove the sediment by straining and put in an atomiser. After watering your sprouts you can mist the seeds or leaves with the kelp mixture.
All that remains is for me to find Liquid Kelp somewhere.