I have pumps run for 15 min at 9am, 1pm, 5pm, 9pm. For my orchids in a greenhouse, it only runs once at 1pm. I have lights on from 6am-11:59pm. I am using kasa smart plugs. The one on the right is designed by me, the one on the left is modified from a free 3d model that got taken offlline recently. My version screws in tighter, has more space for bigger plants.