I use a t-5 to veg & then a 250w. Blue enhanced hps starting the day of the flip I had an old 400w. Bulb I had laying around from my very first grow light I bought from htg supply I'm sure someone will argue the point about the blue spectrum but the bulb I finished with has a red tint to it I've used hortilux,sylvania ,sun supply& probably a few others in the mix the only advantage I see in the hortilux might be the lifespan there are so many hydro shops nearby bulbs are cheap & plentiful for hps led lighting however is still expensive & im interested but have no knowledge or experience with them since my last grow I've sold my home & bought another one putting together another room & it's not coming together near as fast as I want probably gonna set up a temporary grow area for now as its been awhile since I've generated any stash or had much to contribute around here but look for me to start a thread soon with a diy e&f coco/smart pot set up what you said about marketing hogwash in the beginning of this thread might have some truth to it I usually feed at about 5.6 in my res. Which is on a timer in about 3 days ph creeps upward when it reaches about 6.2 I top off my res& lower the ph. Again I use lemon juice to lower my ph. Here in cen- cal lemon juice is cheap,natural& plentiful