The alternate to the fertilizer strip (which is usually something like 6-6-6 or 10-10-10 or any number as long as it is below 15 --according to the Earthbox instructions) is to use organic (granular) fertilizer.
The earthbox holds 75 quarts potting mix -you are supposed to use a strip of 2 cups of regular fert. or 3 cups if you are using an organic fertilizer ( I believe they say to mix that kind into the mix).
Dolomite is a source of calcium and also moderates pH of peat-based mixes.
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"When we kill off the natural enemies of a pest we inherit their work."
Carl Huffaker
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