I use a self built soil that is made up of one part coco, one part perlite, and one part aged Amish amended compost. Each part being 3 gallons. I blend in one and half cups kelp meal, one cup garden lime, one and a half cups garden tone, about four cups of glacial rock dust I water and let cook. I also add recharge to the soil. I don’t add my worm castings till I start top dressing at four weeks. when I water I only use silica and some cal mag occasionally not all the time with the ca. I use some liquid fish fertilizer sometimes if problems arise but the coco soil perlite mix works well but you have to keep in mind how absorbent the coco is so I use that perlite with basically the same ratio.