Hey there , right now you're a bit too cold and a bit too dry. Especially for seedlings you want to be a bit above where you are now. So that' s why you have the humidity domes. That's the right idea, it will be much more humid and warmer under there than on the surface of the pot. At some point or another though you're going to need to take that off. One thing you can do is use an evaporative cooler. It will raise the humidity hopefully enough. If you're not into getting more kit, try just spraying them with water up to seven times a day and water + cal mag twice a week. it will help quite a lot. For the temperature, it will naturally rise as the tent fills up, but if not one thing you can do is turn off your intake fan (always keep the exhaust) . Otherwise dont sweat it just focus on trying to keep the humidity up by spraying until first or second week of flower. Hope this helps ! 🚀