Fertilizer: Two New Products

In the Pet Warehouse ad there's a new substrate fertilizer "Flourite."  I
think Seachem sells it.  It's described as a stable porous clay that
eliminates the need for laterite in planted tanks.  Mix it with existing
gravel bed or use it alone as a substrate for best results.  Each bag
provides about a 2" bed in a 10 gallon tank.  15.4 lbs.
Cost is $12.95

Has anyone used this?  What's it made from and what does it contain?  I hope
they don't stop selling Dupla laterite.

Hagen has a new liquid plant fertilizer.  I haven't found it anywhere.
 What's in it?