First off I would ditch the liquid kelp and mineral water.Second I would rinse the seed 3 times before soaking and 3-6 times after soaking.Each time agitating the seeds until the soak water becomes filthy.After soaking rinse+agitate until water starts to appear clean.This will give maximum stimulation for germination to begin.Hopefully this will raise your sprouting % for the tray which will raise the yield.Good luck and happy growing!