Pink guava at .5 is more of a Grapefruit this is what om looking for with this flavor. The Alpine strawberry is to give it some sweeter red notes....I usually use the FLV lemonade lower by with these stronger flavors I felt it needed to be pushed a bit higher....I always add a touch I lime to any of my lemonade mixes and at 1 drop per 15ml I dont think it will be to much ....