Boondocks Kush - Bag Seed First Grow

Began to notice some edge yellowing on day 15. Raised the light as high as I could in the tent and turned the exhaust fan all the way up to bring the temps down a bit and make certain the light wasn't burning the leaves. Also went ahead and made a solution with filtered and boiled tap water (21TDS after settling to room temp), added 1mL/L of GH CALiMAGic along with .5mL/L of FF Grow Big (mainly to raise PPM) and pH'd back to just below 6.0 (no digital meter). Watered to runoff and double-checked pH on runoff, showing right around 6.0, so good there. Lowering temps and raising light showed considerable improvement (flush with CALiMAGic/Grow Big may have helped, as well) on day 16. Very faint smell began on Day 18. Going to Vegas for four days beginning on Day 20, so I will be using a bottle-made watering stake to keep her from drying out, but don't have anyone that'll be able to check on her while I'm away. Fingers crossed!