VFTs does not neccesarily need to be in water trays. I never put mine in water trays now because of MOSQUITOES, they actually do very well being watered daily. Just let your water tray dry each day and fill it up again the next day, too much water slows it's growth and root rot will ensue. If possible, a humid environment is a great addition for the plant's healthy life, I put mine on top of my fountain elevated by pebbles
