I use only the day light (in the shadow) for my wabi kusas outside and inside the house, because I use mainly mosses this has not been a problem yet.
Hi All, I am like Evelyn mine are on a cupboard by the window But not in direct sunlight.One thing i am trying out in a clear plastic box with 2 6500k GLS bulbs over the top to get the new W-K off to a good start and bring them on a bit quicker This seems to be working well.
ah I remember: sometimes I had them also at the window sill - but with a cardboard-sheet (Pappe) between the window and the container - to produce some shadow... it worked also well