Went to the hydro store, guy said the symptoms are def. a calcium diff. so I bought some Plant Amp to spray on them. He said they should be fine by tomorrow. So, I obviously raised the lights before giving them a solid spraying, have the lamp about five feet over-head now so they won't get burnt leaves. How long should I leave the lamp like this for? I suppose until the beads of water dry out? Thanks in advance.