Looks as if I'm switchin to from the Master A&B to CANNA Coco A/B ...
Just had a conversation with Ralph B. of CANNA N. America, and many
of my deficiencies are caused by nutrient imbalances due to the NPK
of my fertilizers in relation to the propenseties of coco.
coco gives off chiefly Potassium and some Sodium as it gets older (decomposes).
As this level goes up, other elements, such as Calcium and Magnesium, are locked
out. Canna Coco is buffered to keep this from happening as long as two things
are done: 1. The plants and medium are feed with a nutrient package that allows
for both the plant and replenishes what the coco effectively uses up. 2. That plain
water is never applied to the medium as this will erase the buffer, any buffer, and
cause things to go wrong.
High Potassium levels lock out Calcium which explains the curling and deformation,
yellow blotching is Magnesium, the salty look is caused by excess Potassium that
accumulates, without the plant being able to regulate it, in the tissues of the leaves.
Overall the ratio changes, the stems turn purple but the leaves stay a fairly decent green for awhile.
I'm definitely going to be using Humboldt's Additives still, but my main nutes will be of
CANNA.
I'm excited!