hey bro, i thought i would throw out some of my soil mixes to you just to roll over. I've grown in all of these and they work great: 60% organic potting soil, 15% perlite, 10% horticulture sand, 5% worm castings....2nd-30%worm castings, 30% vermiculite, 20% perlite, 20% sphagnum moss....3rd 40%compostes soil, 30% worm castings, 20% perlite, 10% high N guano.....4th 1/3 perlite, 1/3 peat moss, 1/3 organic soil,then fert with high n guano,worm casting,and kelp...... Blood meal will raise PH, Bone meal will lower PH, Dolomite lime powder will balance your PH to an even(odd) 7. That is usually applied in a half of cup scenario if your PH is drasticaly low and your working with alot of soil. Also Bone meal is great for phosphorus. If u want real simple just mix 75% your soil with 25% worm castings. Then concentrate on nuting from there.