I have 8 ft ceiling. I don't know of the temp fluctuation has anything to do
with it. I use my light to heat the outside room when it gets 10 degrees outside. But my temps range from 60 to 80 most of the time
Half ocean forest. Half happy frog. After the first week I gave them molasses every other watering. Every other watering was super thrive(which I have stopped now) 2nd week age old organics.