Sour Diesel Auto (second attempt)

I am new to growing - This is my second attempt since last week my seedlings were eaten by bugs. It looks like one of those may make it, as she has grown one small leaf (in a separate diary). I sowed 2 seeds but only one has germinated. I have her under leds off to the side for now where the lux is 4500. I know the temperature is high (80-90 deg F at night) and am working on a way to keep her a bit cooler but away from the bugs! Well water, so I ordered and am now using hydroponic pH down to keep water pH at 6.3. Join me in wishing this little seedling the best of luck.