BioBizz is just fancy refined molasses feeds. I forget the offical name of it but that's the lamans term. Anything in this style of feed could work well for you.
General Hydroponics also has a line like this.
https://generalhydroponics.com/products/biothrive/
Another option is just going with something that purely synthetic or switch to dry amendments if you want to keep it more "natural"
There is a brand called Jacks that works great for purely synthetic or Dr.Earth or Gaia Green for dry amendments.
https://www.jacksnutrients.com/jacks-nutrients-lineup
https://drearth.com/
https://www.gaiagreen.com/
I get most of these brands may also be unavailable in your area, but there is probably something like this.
The brand is only somewhat important the active ingredients are mostly all the same.
Good Luck!
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