I have this granular fertilizer that states an application concentration of 1 tsp per gallon for my orchids. I have this little applicator set to apply at 5.3 ounces of concentrate per gallon. I have calculated that the concentrate should contain approximately 1 cup of the granular fertilizer per gallon of water to get the final concentration of 1 tsp per gallon. Could some math-minded individual refute or verify my calculation please?