Having grown orchids for over 45 years, and being and engineer and scientist with a career in the chemical industry, I have always paid a great deal of attention to plant nutrition and additives. After a lot of experimentation, and taking cues from nature, I have found a combination that consistently gives me great growth and blooming in all of my plants, so that is what I'm sharing with you, and that is why these are the only such products we carry.
In addition to the use of an "open", but moisture retaining medium, and a container that facilitates lots of air flow to the plants' root systems, that regimen is as follows:
Water heavily and frequently.
Use as pure a water source as possible, preferably distilled, reverse osmosis, or collected rain water.
Use K-Lite fertilizer at about 25 ppm N, at every watering.
Supplement that with monthly additions of KelpMax @ 1:250 (1 tablespoon/gallon) and Inocucor Garden Solution @ 1:100 (3 tablespoons/gallon).