It is HIGHLY RECOMMENDED to use the 3/8" Controllable Flow Spigot, for accurate dispensing of all concentrated liquid nutrients
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Cal Boron 11/2
11% Calcium 0.2% Boron
The most common usage rate for this product is 0.5 - 1ml per gallon for soil applications.
For foliar applications use 0.2 - 0.3mls per gallon.
For best results analyze your feed solution through a reputable lab.