There are 3 types of Trypack, which one?
I do believe that Biobizz has some products that can be easily replaced, like alg-mic. You may buy kelp on any grocery, or pharmacy, and put direct on soil. I do buy Spiruline, it's perfect!! Cheap, use a little, and has many hormones and vitamins. And if you put direct to the soil you make it rich!!
By biobizz i do believe that Grow and bloom are the main products! Maybe fish mix could be included.
As for organic growing, and rich soil i do believe you should get some bokashi or mycorrhiza to water with and :
UNSULPHURED BLACKSTRAP MOLASSES !! It's great, cheap, and easy to use. It will make the soil rich, propagate more microorganism, chelate the nutrients, provide more P, K, Mg, Calcium, and vitamins. And sure, sugar.
Care with expansive products, like Bioheaven. Molasses do the same, for 40x cheaper.