I’m going to be upfront and honest here! The problem I believe isn’t from the lights you are using, one can veg cannabis under CFL’s or even cheap Chinese LEDS , your soil IMO needs help first and foremost here! As stated earlier it doesn’t look the greatest, needs aeration, has lots of bark in it , your ph could be off thus causing , lockout of using poor soil, of the much needed macro and micronutrients! If I were you in trying to save these plants I would immediately change out the potting soil or make your own with peat,aeration ( your choice) and worm castings or compost at a 1:1:1 ratio and go from there! For what it’s worth you probably won’t be happy with the end product if you use weak lights. I was in the same position and thought I could get decent colas from LEDS inside not the case ! They just turned out being little popcorn buds not hardly worth trimming all light and fluffy! Hope this helps and good luck with your grow!