Nutes When Did you....

When was the earliest nutes have been added in your gardens?? is there a spacial time like it sates or is it when they look hungry is a good time to start

I started 1/4 strength two weeks after the first leaves sprouted. You should probably wait until the third week, though.

yea im on the 2 week now and i want to ad muy piranha and my voodoo juice. i have the Dutch master zone in the tank since start as it has no nute value what so ever just a root conditioner and protection from bactieria and pests. i was looking forward to adding them s i hae not used the piranha or the voodoo juice yet and very excited to go..... oh i also have scorpion juice and sensi A + B.
i am in a DWC hydro grow with direct feed tubes to my rockwool mediums