Details: four plants. All using promix soil with gaia green 4-4-4 dry amendments. 600w vivosun LED (270 true watts). 2x4x5ft tent. 4" carbon filter kit. 6" fan for airflow. All auto flowers. 18 hour on and 6 hour off schedule. I usually shoot for a 7.0 ph when watering every two days. As shown in pictures there is some yellow in the leafs. I usually try to keep my tent at around 50%rh~ and my tent is usually 82 degrees F~ with the light on. This is my first ever grow and I'm curious what you guys think I should ph my water at. What temp I should shoot for. How often I should water. etc... I have one Northern lights in flower. Two Nothern lights in veg and Amesia in veg. I'm also exhausting the air out my window and I live in Canada. (legal to grow four plants in my province). I've got a busy schedule and I watch many youtube videos but I want the best advice I could get for my setup. I'm doing LST on all of my veg plants but I need help diagnosing the problems with them. All of my veg plants are in 2gal pots and my flower one is in a 5gal pot. Should I just forget about re-amending my medium since I'm using promix? or should I amend it? I'm in college and on a budget. I've calculated everything I've spent on the setup, 865$USD lol. Any comments are really appreciated! I'm trying to get the best yield but I mean I'm pretty busy. Cheers!
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That temp and humidity is good. How often have you been watering? They appear droopy and some of those markings may be due to over-watering. The third picture may be phosphorus deficiency. Have you been measuring the pH and PPM of the soil runoff or only the water before watering? The plant will definitely need more fertilizer beyond the initial amount that you put in the soil to begin with. Do you have plans to top dress them at some point?