Follow Mr Canna coco, ionic or similar and you can't go far wrong really coupled with the right conditions, mix a+b in equal parts and feed, the pH is the same in the tank after a week it's a good nutrient.
Growth Technology Ionic 1 part is also superb, it's pH is also rock solid and it's the most hassle free nutrient you can imagine, x amount per litre and feed and it's good most importantly, for me both are oh 6.0 using tap water.
I like ionic for its hassle free but it's more expensive give me either canna or ionic I'd recommend either one.