small broown spots on lower leaves after moing to flowering room

The last batch i moved to flowering began to show spotted leaves and leaves were dying and falling off. Leaves are still dying off on those plants but there are no spotted leaves anymore. the batch i just moved into the flowering room 5 days ago were beautiful grean leaves and healthy. Now they still look good, no dying leaves but im finding a leaf or two towards the bottum of each plant that has spots. Im running CAP hydro systems with general hydroponics lucas formula (10ml/gal micro and 16ml/gal flower) 8ml/gal koolbloom, 3ml/gal h202, and 5ml/gal CalMag. PPM @ about 1200. The temp in the room is around 87 which is hot i know but its a sealed room with co2 and the temp in the veg room (where they were before i moved them) was often hotter than that so i cant imagine its heat related,

Any questions info or ideas would be greatly appreciated.
Thanks

can you get any pics? my first guess is either nuteburn or calcium def, most likely cal def., look up a leaf problem guide and compare yours to a calcium def.