All looks great. I grow in soil also. All sound advice from these guys. Read the needs of your plants. And don't panic! I inspect tent daily. Water almost every day. Light watering. General amount will depend on container size too. I use 3gal plastic. l water a quart at the beginning of the lights on period. Little to no run off. Never concerned with percentages, but it's always good to have a general idea of what works. That's why these forums are great! Thank you fellow farmers!
Your environment will be a huge factor in water needs. Get a digital thermometer with humidity reading also. Ambient temperature and humidity will contribute to the soil moisture content. My flower tent ranges from 60°f - 75°f. Humidity 25%-35%. I rarely paid any attention to ph. Lucky to have decent water from tap. I do however try to let the water sit for a day or two before use. Believe this allows for some dissipation of chlorine. As far as nutrients goes. That all depends on how well built your soil is to begin with. I make a variation of a common Super Soil mix I found online. It has a general balance of amendments to get a plant thru with just water. I do however use a line of liquid supplemental nutrients once a week. Half dosage. The soil still has nutes in there. Anyhow, visual representation is always more interesting. This is my experience and efforts. Hope it helps.