Here is my homemade bottom heat for starting seedlings, I used a 24ft length of rope lights (do not use the LED ones) 16ft od 1/2x1/2 wood strip cut into 4..4ft lengths. My bench is 8ft long with 4ft set up with the lights, the other 4 ft for putting the trays when they sprout. be sure and take the seedlings off as soon as they have sprouted. I use 4-4ft shop lights with just regular bulbs , you don't need expensive so called "grow lights"! the 4ft strips of wood are for the seed trays to set on just above the lights. the lights keeps the soil in the seed trays a constant 74-78 which will sprout most seeds in 1/2 the time otherwise

