I've bought 2 of them & I've grown microgreens & sprouts. I'm currently growing pea morgan & pink kale in 1 of them & red cabbage & rocket in the other one. Everything seems to be growing well. To prevent mould, once the seeds have germinated and exposed to sunlight, it's time to stop spraying them with water & start adding the water to the main tray, through the stainless steel mesh, but making sure not the get the seed shoots wet. I've also added a microgreens fertiliser to the water tray as well. It will be interesting to see if the fertiliser improves taste & growth rate, texture etc. I get plenty of afternoon sun on the kitchen windowsill, which seems to be enough here in Sydney. I think it's also important to remove the plastic dome as soon as the sprouthouse is ready to receive sunlight as well, otherwise it will create too much humidity under the dome and therefore more of a potential for mould forming on the seeds & microgreens. I'm currently using Mr. Frothergills microgreens from Bunnings & I have tried some other brands which I've bought online & which did seem to work pretty well, but Mr. Frothergills are very well priced seeds & there are a lot of them in the seed packets.