you should water the plants when the soil starts to dry out. in cups that size when the soil is dry to about an inch below the surface you should water. water a little bit till you get some runoff out of the bottom. you should feed them nutes then when they dry out again feed them just water, then nutes, then water and so on. only give them nutes in the water every other time.Oh alright, ill invest into a ph, but for now ill just mix half of what it says, how often should i give it nutes? every second day?