You'd be better off starting seedlings and new clones in a stndard 4 inch or 2 pint nursery pot,grow under tube flo's with the growtip 1/4 inch under the lamps,then transplant to 1 gal and put under the hid's.You can start under big lights,but 1 gal is large for a starting container.The roots tend to grow along the sides and sometimes out the drainholes leaving a big empty space in the middle,bad utilization of available soil.Try starting in the smaller containers and transplant at least twice before you flower,letting the rootball fill each container before transp[lanting up is the way to go