i know nothing about apple juice. never heard of anyone using it. it was a joke.
i cant see anyway it would be more effective than molasses. you would have to use it practically straight and that would cost an arm and a leg. and i have no idea what the ph would be.
way more sugar per spoonful of molasses and its a proven aid to growth.
i have a brown thumb and stick to proven performance. remember, we arent the first guys to ever grow weed. all this shit has been tried before. so unless its some sort of new product, ie ceramic metal halide lites, led lites or something like that, its more likely a wives tale.
K I S S. its farming. people have been doing it since adam and eve.