I use the tube lights as well and love them. I only have the red and do regular white lights too. This week I will be potting up peppers and planting my seed potatoes. I already potted up the tomato plants and the greenhouse is filling up fast. Right now we have 4" of snow and 20° outside. I too start my seeds for a first week of May planting time. Sometimes I have to use a hoop frame for the nights if we still are too cold for the peppers. Happy Gardening.