<span class="link_user">@Serendepity</span>, if you are UK / EU we struggle with low RH this time of year, your DIY dome should help for now, try to keep the vents closed on the tent for a few days and get the temps up to the mid 20s Celsius and it should start to retain some more humidity inside the tent, a small reptile heater to keep the pot warm should help too, but for a first time and 12 days it looks OK to me, don't be aiming for the world's best grow this time round just focus on learning the basics with environment for now and try to dial everything in like you already are doing :ok_hand::ok_hand: if budget allows you could invest in a RAM humidifier but they are a little costly for a new set up as I imagine you want to keep the costs as low as possible for now?