Great guidance! Thanks for posting this.Hi Rodgers,
Any PREMIUM potting mix will be fine to use. I have had successful grows using Debco premium potting mix from Masters but you may not be able to get that anymore so just find a good one from Bunnings. You will get a lot of different answers to your question so just keep it simple and don't over complicate things for your first grow as it can get very overwhelming as their is SO MUCH information out there and everyone has their own way of doing things. My suggestion, and its only a suggestion, would be to use 70% soil and 30% Perlite. You can get a big bag of Perlite from any hydro shop. Don't buy it at Bunnings. It is WAY to expensive! You can add a bit of Dynamic Lifter and Blood and Bone to your soil also but just a couple of tablespoons per 50L otherwise your soil will be to hot and you will burn your babies. What are you planning on using for Nutrients? It is always better to go a bit lighter on the nutes at first then built your way up to full strength. For my outdoor grow I am using 50% soil, 25% coco, and 25% Perlite. My plants are very happy girls. Anyhow if you have any questions please feel free to ask away. More than happy to help. Good luck with your grow. Bombs away!