White Widow 1st Grow

First week of grow, using Ph Balanced water. I have hard water PH around 10. So i have to use PH down. Phosphoric acid. I will need to keep an eye on my P ratios as I go forward. My tap PPM is around 295-310. So when I add nutrients and Monitor I will have to take that into effect. I am also keeping a 18/6 light schedule. I am running the lights through the night so to keep with the temp fluctuations since winter is right around the corner and I assume it will get much colder at night in my apartment. It is in a 2x4 tent. Wish the tent was taller but I can make the area work. I will just have to grow my plants shorter and start flowering earlier so that I can keep my light ratios in a good place. Humidity has been difficult since my apartment is quite dry and then exhaust is stronger than it needs to be so I need to get that under control as soon as possible. I have been able to keep the temps around 78-82 pretty consistently. I let the seeds soak in water in a jar. I kept it uncovered but in a dark drawer for about 16 hrs. when I came back the seeds had sunk so I placed them in a wetted rockwool cube. 3 days later 1 sprouted. 1 day later the second sprouted.