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<span class="link_user">@Itshimlee</span>, Good morning, you have misinterpreted my description. I use "just water" to germinate my seeds in jiffys, adding only mycorrhizae. Many years ago, I tried making "living soil" mixes and concluded, after tests and a lot of study on the subject, that broadly enriched soils are better for outdoor cultivation where the plant is not limited in terms of root growth. In a pot, you cannot use the necessary amount of substrate for a complete cultivation from start to finish, unless of course you transplant regularly, including during the flowering stage (which I would not recommend). It is better to use liquid fertilizer as it provides the necessary amount of nutrients and gradually adds organic matter, something you cannot do in the soil because you run the risk of over-fertilization or creating phytotoxicity in your plant.
Returning to the topic, I use pure Sphagnum Peat substrate, with a 70/30 ratio of Perlite or Pumice Stone, depending on whether you are looking for outdoor or indoor cultivation. The latter lasts longer in the mother soil, the former aerates and decompacts, making it more suitable for pots.