welcome aboard the fun train 420 community. Hope you had a good xmas and are ready to grow some great weed with us all?. As mentioned , small spots are good indicators most of the time and require reaction. Thankfully early on from seed , their are not many things to do wrong if not feeding , training or other. There can be damage left from germination where leaves get fused for too long before opening up to the light. Like a scar on us they grow out and look odd. Coco is a great medium to start with and very forgiving of any issues . can be reset to base in a good flush.
interesting scaffold going off , god help you when you have to chop for the toppings !!. Let em hang mate and get them used to supporting themselves with some fans on them too. You will be rewarded with some strong limbs and fruit bearing muscle.. young seedlings can benefit as they first emerge and settle in. If you watch a timelapse, you can see how much they move around too. Colour looks nice and healthy in there. Hope you can get a journal going so we can follow along with you . have a poke around a few to get the general just then go into helpful links for new members to get simple steps to starting one.
keep in the green mate
have fun