Can i grow just using bloom nutes

I have an auto flowering plant that i got for free and it says after the second week just use bloom nutes. now i have other seeds that are free seeds and i was wondering what will happen if i try to put them in the same DWC bucket and just use bloom nutes and leave the lights on 24/0. thanks in advance for all input

depending on your bloom nutrients there is not enough N in there to build your seeds to produce. get some soil that has N in it lik ffof and you can just hold off til you need bloom. along with other elements your plants need N to produce chlorophyl

Should be fine. Most auto's go into flowering before the 4th week of veg.