How long has it been in flower? I have been told that if you wanna take cuttings you have until the end of the first week of flower to do so, which is actually what I just did. What type of setup are you running? Hydro, soil, what? If soil just wait till the pot feels light you will be able to tell. If hydro, just watch the ppm's and ph that will tell you when to add more nutes. I have used the SS reciepe for 3 yrs and it aint done me wrong. That is botanicare line with great white but im sure you can use something other then that.