maryjohn I measured my ph one time, thats it, adjust it none, check runoffs once, dont have an ec meter or ppm meter either, im lucky that my food plus tap water is very workable, seedlings get watered about once a week tops, other plants every couple of days without run off. sometimes just a cup of water sometimes a little more, this is the mentality about organic growers that i dont like, u think everyone that grows hydro tinkers around with everything, and i dont blame u either, some of the chems guys are living imo in a scientific nightmare with all the bs they worry about, it was theese same folk that kept me from coco for a while but now that im running it i dont think i can go back, id like to get into organic nutes though, maybe next run. watching a coco plant grow is much more fun, they get bigger every time u look and i find that as plants get rootboundish in their containers that soil shows dehydration much quicker then coco plus needs more container to begin with for the same size plant. its all good, it really isnt a one size fits all thing, gardening uknow.. to each his own. just dont be scared of coco because it can be so simple.