Hello Folks, This is my 1st post...just signed up. I'm growing just 1 plant and use 3 - 36 watt T-8 6500K 4 foot tubes for the first 4 1/2 hrs then 1- 100watt MH for 9 hrs and then 3 - 36watt T-8 6500K 4 foot tubes for the last 4 1/2 hrs for veg using 2 separate timers (18hrs on 6 hrs off)...never exceeding 108 watts. Switching from tubes to HID then back to tubes in proportion simulates the sun's intensity throughout the day...this was my idea and it insures that only a 100 or so watts are being used at anytime. I use nothing but all the Fox Farm line up on nutes and have a 5 gal bucket continuous drip which only drips when the tubes are on for 9 to 6 hrs a day....this gives the roots a chance to dry out some. For bloom I change the tubes to 3000k and use a 100watt HPS which I can just switch the bulb out because I have a electronic ballast in my hood that allows either kind of 100 watt MH/HPS...home made by the way. When switching over to bloom, I adjust the timers so the tubes come for the first 3 hrs, then go off and then the HPS comes on for 6 hrs, then goes off and the tubes come back on for the last 3 hrs (12hrs on 12 hrs off)...again never exceeding 108 watts. You really don't need any more watts then what I got going on to grow a plant or 2 and it is completely possible to make up your own system without spending big bucks on an elaborate system...also don't waste your money on those 14 watt LED panels, I tried 6 of them and they weren't bright enough. You can find a lot of good hydro stuff such as lights and fixtures on Craigslist for dirt cheap, if you are creative and want to make a cheap and effective light system such as mine. 1000bulbs.com is where you should consider getting replacement bulbs etc. I discovered that no nutes should be used until the plant establishes a reasonable root system..another words no nutes until the plant is at least 6 inches tall...you'll burn the tips of the leaves every time....just follow the directions for the nutes you use. I don't even use a PH meter and have no issues. My plant experience has been going real well for not really knowing what I'm doing....learned from my mistakes and got educated from sites like this one. I hope this helps someone from not spending a lot of unnecessary time and money on all the choices that are out there. Pics will come soon...when I figure out how to post pics...it doesn't tell you, at least I haven't found that yet?