Week 6 and going strong, I haven't noticed any less growth with this led compared to my 1000 watt hps and if anything it's more growth so I'm really impressed by it. Girls seem to love it, i haven't changed anything I'm still just following the feeding schedule that came with the nutes and giving teas 1 time a week. I think they trying to preflower right now so I will be changing to bloom nutes soon