New questions arise..i thought i had it all worked out..im a bit intimidated by this 12 site ebb and flow w/ two 1,000 watt litez sittin in front of me still in the box lol.. this is my seconds gro..the first was in a "phototron" it had depressing yields...i wanna play with the big boys...im nervousabout which nutes to buy i put tjem in my res. And letter rip??? I just watch my ph (6.5?) And make sure theres no salty build up in thelines ...how do i know when to flush? Trial n error.....