hey,
You are over watering HUGE. Like even 3 times during the lights on cycle should be more than good for now. Don't put ANY nutes in your res! don't nute them for another week at least... and check your dosage too, more isn't a good thing trust me on that one.
Also, PH is important, get a little digital testor and some PH up and Down so you can maintain 5.5ish in your res.
Tap water isn't the greatest choice, I have to use it too, but make sure you let it sit out overnight before you use so chlorine can off gas from the water. Once you start adding nutes again, start really light and increase it as the plants need it and grow.
Just tryin to offer some learned input.