The "Bio-Canna" range is awesome and organic.
Have been using it for years to grow in full soil and sunshine in a "Mediteranian" climate and I can recommend them highly.
They are very concentrated, making half strength completely fine and one bottle will last you multiple grows or many plants.
They are also complete fertilizers, meaning there is very little extra to buy, just one bottle for grow and another for bloom, making using them simple and straight forward, with no having to mix part A with part B or part C.
Add an organic P/K booster for use during flowering and maybe a seaweed tonic/extract for plant vitality throughout the entire life cycle and that is about all you really need. Adding some worm castings, compost and humus to your soil will really make your plants happy and some volcanic rock dust, which is full of trace elements and things get even better! The only other product that I have come to rate as almost essential now, is "Mykos", made by Xtreme Gardening, which is a form of mycorrhizae that lives on your plants roots and help your plant to assimilate nutrients and is truly a wonder product! My plants have never been happier since I began using it and they seem to require less feeding too.
It is available through eBay if you have trouble finding it locally.
And no, I don't work for any of these companies or receive any rewards for promoting their products!
Hope this helps,.........
Organoman.