Starting with a good base is key..the soil you have is good just not ready yet for autos.Try this..when that grow is done take all your soil add some mycros and water it 1nc a week with unsulfured molasses ..in 35-45 days soil will be ready and grow the hell out of anything.Mat need cal mag but not much else if you follow your nutes. I have made a mix of good soils ffof,ffhf,pormix ult,epsoma organic,and then added amendments to it.worm castings,blood meal,kelp,bat guano,green sand,D-lime,rock phosphate ,along with microbes to eat all that...and let it cook for 45 days or more and i only feed nutes in bloom witch i really dont need to do .Plant would do fine with cal/mag+ and phed water.