Liquid fertilizers have secret benefits?
I've been on the forums for a while and I consistently see people turn to dry salt fertilizers, and that's what I did when I started this hobby. I've never had problems with them, they are way cheaper, and can give you greater control over what you're feeding your plants.
Today at the LFS, an employee (well intentioned I'm sure) tried to convince me that he's seen more lush, vibrant growth (note the very subjective/relative terms) when using liquid ferts as product "X" contains poly-somethings and saturated-or-others. The terms were terms I've heard for human nutrition, never plant growth. He then claimed these are sometimes supplied in small amounts through good quality fish foods, but I've never heard of that before.
I seriously doubt he was just trying to push a sale on me, but can anyone else verify that a liquid fertilizer can, in fact, carry some types of chemicals that a dry fertilizer can't, that is particularly beneficial to the health of aquatic plants?
Christian, husband, brother, friend, hobbyist.