Thanx for the speedy reply, VV, I appreciate that. Okay, here's my situation: I have about $130 total left to spend, and that needs to cover the lights, hydroton, rockwool, and PH testing kit, so my budget for the lights is about $100 so I can afford the other materials. What do you suggest? It will be a closet grow, so T5's seem like the best option. Since I'm growing autoflowering plants that will max out at about 17", can T's be used the whole way through if I mix the lights? For some reason, when I click on the first link, it says the page is unavailable. Once again, thanx for all the help.