Pamela Koide Hyatt owns
Bird Rock Tropicals, a specialty bromeliad nursery in Encinitas, California, on the coast just north of San Diego. She hybridizes Tillandsias. She leads ecotours to see bromeliads in habitat. She uses a custom fertilizer formulation for bromeliads, prepared for her by Total Gro, telephone in US 800-433-3055:
20-10-20
(No Dye, No Boron, No Copper & No Zn)
TOTAL NITROGEN...............................20%
12.0% Nitrate Nitrogen
8.0% Ammoniacal Nitrogen
AVAILABLE PHOSPHORIC ACID (P2O3)....10%
WATER SOLUBLE POTASH (K2O)............20%
IRON (Fe).....................................0.100%
0.10% Chelated Iron Fe)
MANGANESE (Mn)...........................0.050%
0.05% Chelated Manganese (Mn)
MOLYBDENUM (Mo).........................0.010%
DERIVED FROM: Ammonium Phosphate, Potassium Nitrate, Ammonium Nitrate, Iron EDTA Chelate, Manganese EDTA Chelate, Boric Acid and Sodium Molybdate.
POTENTIAL ACIDITY: 425 lbs calcium carbonate equivalent per ton. (193kg CaCO2/907kg)
Elecrical Conductivity Readings
EC FACTOR - 166.7
EC(mmhos/cm) x 166.7 = PPM Nitrogen
The back of the package contains table showing dilutions for various settings of various automatic injectors.