PH help!! New to hydroponics
as stated I am new to this. is there an idiots guide? My elevation is 6669 feet in west yellowstone, mt. working on a limited budget. I am growing tomatos, basil, mint, cilantro, chives. or attemting to. The plants were/ are doing pretty well. I have a vertical pvc ladder rotating water system. i have it in a mudroom with windows on 3 sides and the heat is a constant 60-80 degrees. Water ph here is 7.5. i know I have been doing this wrong and it just recently clicked. I have been using the plant nutrients as ph down. I know wrong wrong wrong. If I put the correct amount of nutrients in the water the PH is WAY low. can I use something natural like baking soda to bring it up or should I use actual ph up for hydroponics? also debating placing an air pump with airstones in the pump bucket is that needed? If its gets day/sun light min of 12 hours do I need a grow light? (pricey). thanks to anyone and everyone for any advice!