The purple chem in back was vegged for 47 days and one in front is a week younger so 40 days on it. They seem to be moderate to heavy feeders which makes sense because there are very vigorous. I'm using the aggressive feed schedule with my nutes and they seem to love it while others have minor tip burn. A plants appetite is largely based on environment as well as genetic factors though so keep that in mind. How strong your lights are, how much wind, co2 levels, VPD etc. These things will make them more or less hungry depending on what those variables are in your garden.