Regarding the money tree, I tried so many spots in the house to get the right one. The best spot is the brightest spot- with sun coming through the window onto the leaves for several hours a day. I'm not sure who said money trees are easy, because they aren't.
Back to topic, we have half screens on our double hung windows. We started moving the screens to the top half of the window this summer, now leaving the top portion open for fresh air, instead of the bottom. We originally did it to improve air flow because I had so many plants in front of the window it was a chore to open the windows.
But the plants have since been growing like crazy since the screens have been on the top half of the window. Honestly, I had not thought about how and why the plant growth had improved, until Gene made this post.
