First thing to do is address your pH.........a pH of 7.5 is waaaaay too high..........aim for somewhere around 6.4 for soil growing.
I can't see any evidence of insect damage or "destroyed" leaves in these pictures, only white residue from the sprays you used.
Maybe post some clear close up pictures of what exactly it is that is bothering you.
Also, never water to a schedule and never water every day "just because".........water the entire pot until run off then do not water again until the top 3-4 cm / inch to inch and a half, have dried out again then repeat. A wet/dry cycle is the proper way to water.
Each plant will have its own water needs, some will dry out faster like those nearest the fan and other will stay wetter longer..........so giving evey plant X amount every Y hours is not the way to do it. You will need to monitor each pot and water accordingly. Ditto for feeding.
Unfortunately, you have created a big problem for yourself by growing so many plants for your first grow..........hopefully you can keep everything well up to date and well detailed in your diary, in case you need further questions resolved.
All in all your plants look quite alright.........new grower nerves, over thinking and wanting to get everything perfect can be a trap.