I dont know about all the ph shit and such....cause all the stuff i use is organic but i can help you out on the lights bro....
This is my setup, my camera isnt here now so i cant show you pics but....I can tell ya what i got....
I have a 5 plant setup...in a box...
What you want to do is go to home depot....or wal-mart...
Get some dual light adapters, the are like 2.89 a piece so you can put two bulbs in one socket...
I have six cfl's in my setup....they are 60 watts..now watts dont matter, its all in the lumens.
I cant remember what brand exactly but they come in four packs and they are the spiral cfl's the save you money kind....The ones you want come in a red pack, they have 800 lumens each....
they are about 10 bucks a pack...get as many dual adapters and lights as you want...
my shit is all organic so to kill gnats and any soft body insects that might put larvae in my soil i use organicide...its a fungicide and a insectaside...15 bucks a bottle but will get rid of the problem very quick....
And this is the only place im not organic, hate myself...lol
I use shultz plant food. 10-15-10..very safe and you can use it every time you water your plants...very idiot proof...i use 2 liter bottles and put 14 drops in the bottle and fill with water...
That is about it i guess......ummmm.any other questions feel free to ask...