I have just gone "Peat Free". The mining out of 12,000 year old Peat Bogs isn't sustainable, plus Peat Bogs are considered to be Carbon Soaks, drawing excess Carbon from the atmosphere. So I have gone Coco Coir based. I am using a pre-mixed call New Horizon by Westland. They use Coir, composted Wood fibre and composted Leaf matter. They claim it feeds for up to 6 weeks and since starting with it my clones and seedlings have improved no end. At the moment I am just adding a little mycorrhizal fungi. I am looking to amend the mix so I become less reliant on bottled nutes. I notice that at my local Garden Centre they have products like Perlite, Vermiculite, Blood Bone & Fish meal, granulated Chicken Manure, dried Farm Manure, Lime, Worm Castings and composted Tree Bark. I also live by the sea and each spring literally thousands of tons of seaweed washes up and the council pile it up with tractors for people to take away. I can also get a constant supply of Nettles, which I believe makes a good "tea". So with all of this sustainable stuff at my disposal I should be able to mix a decent grow medium. My goal is to get my grow to be 100% Organic, 100% sustainable and free from single use plastics.