it took me many years to work up the courage to go hydroponic ... thanks to xcrispi and others, it was so simple, and trouble-free ... mostly, keep your reservoir temps down, 70-75f ... I also use Fox Farm nutrients exclusively, and I just go by the Fox Farm Feeding Schedule, they post it on their website, and its also on their free brochures, you find in nurseries, etc ... I used some local spring water, which pH'd pretty good, and went by their schedule ... although I checked pH and ppm daily, it didn't need much fiddling, the FF was almost perfect, with the spring water I was using ... your water, of course, may be a whole different situation ... FF gave me the best plants I've ever grown :thumbsup: