I've never had a great sniffer, my wife on the other hand reminds me it smells like skunk during her daily laps around the house. My grow is in an old building behind the house.
Is it time? Hydroponic grow day 50, breeder info says 8-10 weeks to harvest. I'm seeing cloud trichomes, but pistols mostly green and lush. I have old man eye! Wedding cake strain.
I do 3.5 tablespoons disolved for 30 gallon ebb and flow. I mix it in a bottle over 3-4 days shaking it 3-4 times a day, before adding it to the rez, after but are added
I start seedlings in solo cups with holes in the bottom, they're a lot easy to guage when they need water. With Gallon pots it's hard to tell if the plants are getting water or not
What I did was put the same amount of soil in an empty cup and use it as reference (by weight) as to when they need and don't need water. Don't put any water in your reference cup. When your plants weight is the same as your reference cup add water.
Air temp doesn't equal soil temp. What are your soil temps? I find 77° best for seedlings. If they are on a concrete floor and/or your soil temps are below 70, that may your problem.