ok so this is my first cfl grow, im 6 weeks into veg(yes i have head space for pretty big plants) and im looking for a few things for when i start to flower, which should be within the next few days. im looking for pc fans to get air moving in my grow box. where can i buy pc fans??? my plants also look like they are starting to suffer from a ph problem or maybe lack of nutes, so im looking for a check ph tester for soil and water, where can i buy this?? i know these question may seem retarded to some of you but im only 17 and this is my first grow and im not real familiar with were to by a lot of items for growing yet.