All seaweeds contain auxins, cytokinins, and gibberellins. The gibberellins are really powerful growth stimulating hormones, but they are SO chemically fragile, that they are totally decomposed by the time the product makes it into the bottle.
Depending upon the species harvested and the process used to extract the juices, the amounts and ratios of the auxins and cytokinins vary all over the map.
Liquids tend to have it all over powders, as the drying process degrades all hormones pretty thoroughly.
The ratio is important, as that's what controls the plant's reaction to the treatment: higher cytokinins = plant growth, with little root growth, leading to leggy, weaker plants. Higher auxins = root growth, followed by commensurate plant growth. 50/50 is anyone's guess, as it can vary between types of plants.
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