Hello, ive always had my Pilea Peperomioides in a north facing window. It has grown well and enjoyed this window. Regardles i have some other more light loving plants in the room and have a lighting setup to give them more light. Four bulbs 1600 Lumens 6500K, so they are bright. My congo, xanadu and begonia maculata are loving this light growing very quick, so i tought putting my pilea covered under some leaves might give her a little more jump since she likes a brighter light than a north facing. But she has since started showing some reddish tones in the main stem and new growth shows some red in the stem too. Some pilea group said it might be a reaction to bright light. But i want to make sure that putting her under that extra light is not harming her.