The Canna Mono Series are single mineral element additives. If your plants are suffering from a deficiency problem, this may be the answer. Mononutrients are essential for plant development. Canna Mono Magnesium helps with photosynthesis as magnesium is essential in this process. This can be used with Canna nutrients or any other nutrient range.
Canna Mono Magnesium comes in a litre bottle and has 7% magnesium oxide(MgO).
Have a look at the Canna Deficiency Guide to see if your plants are showing signs of magnesium defficiency.