I am using the tray method on many of my sundew pots now, but the soil keeps drying. All of the pots have 3+ drainholes and I keep them in 1+ inches of water most of the time. The soil is moist directly underneath any dryness, it is only 1mm or less on the very top that dries out. Would getting a taller tray to raise the water level help this issue? I see photos of sundews in their habitats and in other collections and their soil looks more moist than mine does.