i just read this whole post, and a bunch of other full posts, but i still have some questions.
1)do you have to refill the water(if so, how much?)
Plants drink water so yes you have to "top up the res". I recommend cleaning and dumping out the res every other week to reduce the chance of nute build up. Depending on a lot of different conditions sometimes your plant will drink more water and sometimes it will drink more nutes. If your plant is drinking more water then nutes and you keep topping off the tank then you start increasing the nutes in the tank and you will get nute burn. This is where PPM meters come in but you dont really need one for small grows in my opinion but they would be cool ( I dont have one and dont know much about them ) They are pretty expencive.
2)NUTES, can i get a "schedule" by weeks, of how much to put in, and when.(i am going to use fox farm)
Click below for Foxfarm feeding schedules
FoxFarm Soil & Fertilizer Company
3)i know nothing about PH levels, if they are at the wrong levels, how do i get them to the right levels?(and what are the right levels?)
You NEED to get a PH tester and PH up and PH down. This in my mind is a must. A plant will get nute block if the PH level is too off. These kits are cheap. You can get one on line or at a hydro shop. I dont recomend a pool or hot tub one because they dont tend to go low enough. You dont need a digital one ( although cool! )
I use this
General Hydroponics pH Control Kit (Growing Supplies / Hydroponic PH/EC/TDS Meters & Solutions / PH/EC/TDS/ Solutions)
4)any general things to do for caring for the plants(this is my first grow, so even if its somthing small, i probly dont know to do it, so help me out)
1. Keep lights close so that plant grows short and bushy ( if lights are to far away from the plant will streach tall and it will be hard for CFL's light to penetrate to lower branches due to low lumens.
2. Check PH levels everyday ( If PH levels are off dump and replace water - AG res only holds 1 gallon so PH fluxuations can be dramatic and if you dump PH up or down into res it such a small amount of water you can over compensate easely.
3. Buy more CFL's for side lighting. 6500K for Veg - 2700K for flower ( Although I use both for flower and find that this gives more dence buds with the cost of a slightly longer flowering period.
4. Buy the figure 8 cord to conect to the AG main light so that you can have it on its own timer.
5. Buy airstone and pump.
6. Personaly I recomend once the roots hit the water and you have an airstone and pump to TURN OFF the AG. This promotes healthier roots. An AG over waters imo so by turning off the watering feture and having an airstone turns your AG into a DWC unit.