Generally speaking, most of the people on this forum who don't mineralize top soil use the Miracle Gro organic potting soil for their dirted tanks.
I'm no expert, but as I understand it, top soil has little to no nutrients, so you have to mineralize it in order to provide it with the nutrients your plants will need. Here's a thread that talks about how to mineralize top soil:Excuse my ignorance, but what do you mean by mineralized top soil? Is that just the addition of ferts like root tabs, or something more complex?
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