I think A also contains all the micros too, its got the N because the Ca and Mg are from nitrates. But I had a look at the tigerbloom and that seem to have all the micros ect that you had cut out.
I like to be cautious so I'm not sure I would do it, since canna balance the nutrients pretty well to start with.
In future just air on the side of caution as far as less is most often more. Best to slightly underfeed than over. You can always push a strain harder once you have run it a few times and become familiar with what it likes.
I think you did pretty well though, its a learning curve and we learn far more making mistakes than not.
If I may make a suggestion. Don't let your pots sit in your run off. Reabsorbing run off can lead to overwatering ( or technically lack of oxygen at the roots) and it can contribute to salt build up too which is one of the biggest problems a grower can face. Apologise if this has been already mentioned!
I haven't met many people who don't like the quantum boards. Once of the best things I ever bought.
I'm sure you will soon be smashing these grows out the park.
