Your plants say BRRRRR!!!
They want to be 65 minimum night, and 78 day. Cold wet roots = sad droopy plants. Plus being on the floor- if the floor is cold, you might have even COLDER roots! Is that a cellar floor? Brrrrr you need to get them on something quick!
The other thing is that those grow bags don't always drain that great, and if you prop them up off the floor on a milk crate, not only will the chill from the concrete not get to them, but they will drain more freely.
Be careful with the superthrive because you look right on the verge of a nitrogen overdose. It's very N rich.