White Widow Auto Aerogarden 1st timer

Day 9 looks fine Day 10 apparently I have paranoia but seems the slight grey-ing is fine/perception issue Day 11 1 of the leafs on plant#1 got some sort of growth on it (Or discoloration), heater was left off overnight & the room dropped to 67 degrees, too cold. Could be related. Full blast on fans & observing. Under leafs are completely clean & clear. Ordered Neem oil just in case. Dropping humidity levels to 55 from 60. Lowered LED, 6.5 from Canopy now. Day 12~~ MISTAKES WERE MADE~~ The suspected WPM you can slightly see on day 11 on the leaf ended up not being WPM, and I discovered it too late. In the AM the "growth" had spread all over the leaf, 1 spot had turned into 8/9. After debating and researching, I Snipped the leaf. DUMB. As soon as I did that I was able to see the leaf up closer and it was clearly not WPM but some sort of burn / deficiency. Which didn't add up as nut scheduels & ph was perfect, that left me with rot or fungus. Picked up the aerogarden res and sure enough, 1 root out of the 10/11 pure white ones was browning. Quickly changed the entire res, gave her fresh nuts after steralizing the hell out of the smelly rot bucket & back in she goes. If I had a better microscope, like a usb/wireless one I would've identified that better yesterday. I knew something was wrong but couldn't figure out what. The smell in the res was horrible and was only 5 days old. As for how it happened. The first 3/4 days of owning the aerogarden I proceeded to start growing, even though the Black "caps" to block light out were not here yet. So, lightleak. I've also put black tap on each of the 2 tubes going "into" the aero system to block even more light leaking. Temps are solid. Additionally I nuked the entire tent just incase. After making a huge mistake here just 3 hours after fixing everything, she is already showing signs of massive life again. She's growing not just a 3rd but now a 4th pair of leaves. Obviously I stunted her here but she seems to be recovering very nicely. I also made a 3rd error for the entire past 2 weeks, keeping the weaker aerogarden LEDs 12=14 inches from canopy. I assumed because I'm also using a 300w VS that I would want to use that distance. Wrong, lol I've been depriving them of UV due to distance, So in all sorts of ways I've stunted both Plant 1 & 2 here. Oof. The LED is now 5 inches from canopy as needed for the power level of this LED. So ya, MISTAKES WERE MADE but shes coming back strong, I'm shocked & relieved.