Uggh...there you go confusing the shit out of me with the Sweet candy supplement...lol
From there web site:
However, if you do not use MEGA CROP as a base nutrient (why not?!), then we do offer a few supplements from our old product line that we will have available for purchase so you can save money by not using other brands. Also, a few products cannot be mixed in with the main product, for example Sweet Candy has high amounts of carbohydrates/sugars, so it can cause fungus/mold/rotting issues if mixed in with the main formula, or in certain growing methods like RDWC or recirculations systems. So this is a standalone product not mixed with main formula, and offered separately, however it is completely options and not necessary.