Help with mineralizing soil
I have had a 29 gal tank for years. I have had live plants for years too. Recently I have decided to use soil to help bring more natural nutrients to the plants. I am planning on mineralizing it before putting it in the tank. I have found many places that say how to do this and many have mentioned using Miracle-Gro Organic Potting Soil. I got some and have been soaking it (the method I'm following says to soak it for two day then dump the water on the top). I pushed it all around and mixed it to make sure it was all wet. It has been a day and a half and 90% of the soil is floating. Is the soil bad? Am I doing it wrong?
I am new to using soil, so any tips or help would be appreciated