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the white spots look like lite bleaching from dripped water...are you spraying these plants?
no need to strip the affected leaves, simply mix 1 cup of water and 1 tablespoon of baking soda pour the mixture in a spritzer bottle and spray...
your watering too much, evident in both the roots and the drooping leaves try dropping your ph to 5.5 and look for changes within the next week or so
an extra hour wont cause your plants any harm but the soil they are in will slowly kill them especially when the fert acid balls dissolve you...
can you post a picture? Is your light above them , or off to the side in the direction they are leaning? stem rot can also make plants begin to...
overwatering excessive heat nitrogen toxicity ....the plants leaves will not recover from the claw, you look for the new growth to not show...
the lady bugs will die from the pesticides your using;)
your issues are most likely your premix solution...... I highly suggest you buy some 70% or better and mix your own ....approx 2 tabel spoons per...