I used dry amendments this grow, so nothing I can do now, Either way, my feeding schedule is finished. They were last fed the day after I started this thread, and 3 weeks before I started this thread. I did give them cal-mag just before the tails started, which was their only cal-mag treatment.
All things considered, I think this may be a VPD issue. My high 70's temp coupled with my low humidity, does put me in the High Stress bracket of the VPD chart. So I basically have a choice between a little foxtailing or a mold risk.