2 weeks sounds even better thanks guys. all of mine need watering at different times of the week, so my watering sessions take about 3 days to get them all and then its almost time to start over with the first ones. so im constantly using either nutes or fresh water and never waste much.
after i use fresh water on one, i put a piece of tape on the pot. so the next watering i know will be nutes and i take the tape off. just my system and works pretty good.
now if i could just get them to drink at the same rate and water them all at once. lol