Best IDEA!!! you have really good water like me then. Go get some distilled water or anything that is bottle that has a low ppm like spring water and just mix one gal with one gal. You will have good minerals from your house water and then u can dilute it so the plants dont burn or have nute lock out. Once they get bigger u can forget about diluting it as the plants will enjoy all those minerals. The fog timing isnt that big of an issue as long as the ppms are inn range with plant growth. To get an idea of where your ppms should be i would take what a normal hydro system uses and cut it in half and up it periodically. So seedlings normally would be about 150, u would want about 75. 2nd week about 250, 125 for fog, 3rd week about 400, 200 for fog, and so on. I would start at 100ppms for now, the plants wont hurt but they wont grow to fast and bring up the ppms each week a little. a good indication u where the ppms should be a little browning of the tips tells u to back off.