I like this soil mix if you have some time to mix it... Then you can get away with only water for the whole cycle if you really wanted to, or, you could go and top dress a few ammendments once a week to get better results.. Itchybromusic is the soil man, im sure he will chime in soon Clackamas Cootz’s (Super Soil) MixBase mix: 1/3 sphagnum peat moss 1/3 aeration (perlite, pumice, lava rock, rice hulls, etc.) 1/3 HIGH QUALITY compost and/or worm casting To every 1 cubic foot (~7.5 gallons) of the base mix add : 1/2 cup kelp meal 1/2 cup crab shell meal 1/2 cup neem or karanja cake 1 cup gypsum 1 cup CaCO3 (oyster shell flour, dolomite lime, calcitic lime, etc.) 4-5 cups rock dust per cf Rock dust should be super fine: the consistency of flour. That’s it! The key here is quality compost/worm castings. That is the LIVING part that makes this whole soil mix work. So it must be HIGH QUALITY. Water with dechlorinated water and you are set!! No pHing, no checking the TDS of run off, no cal/mag, no BS!