What are these little brown spots?

There fine, water less and start your bbm of nutrients lower after transplanting. make sure going forward you have 10-15 percent run off with matching bbm in your intake amd outtake and let them dry back inbetween. Use your fingers on the top would and make sure it’s dry before feeding. They use less nutrients and water after transplanting, autos more then photos but they still need usually a week to adapt.

Hi, I wouldn't worry just yet. If it gets worse, you can check the runoff; it shouldn't be higher than 6.2 in the current phase. A bit later, it can rise to around 6.5 as it heads into flowering, and if that's the case, everything is fine. But start giving her calmag as a precaution from now on.

hey 👋 everything is fine, your plant is adapting to your substrate 👌 If you notice any spots or discoloration on the next pairs of leaves, it will be time to take a closer look