That's fair. I don't actually have any fish yet but the Aquathol is not more than about 20% higher priced. So it sounds like that is the safer bet. Any experience on which which type you prefer? The Super K granules would certainly be easier to apply than mixing the liquid K formula in my tank sprayer. I can see the plants continue about 15 feet or so out from the beach and dock area. Even a hand sprayer won't get that far unless the wind is blowing to my back. And if I'm applying the granules, I'll have to throw it by the handfuls to get it that far. Or take out a kayak and apply it with a spreader. Any ideas from the more experienced?