In my opinion, there are better options if you want a little boost. ADA is relatively expensive...good product from what I've heard, but not necessary for most tanks unless you're really going all out for an ADA style tank. If you're looking for a nutrient boost directly to the substrate you can always add root tabs or go dirted/MTS. There are several safe DIY substitutes for higher CEC (kitty litter, Safe T Sorb, Turface, etc.) as well as commercial products that aren't quite as expensive (Eco complete, fluorite, etc.).
I would look into those options before jumping into purchasing ADA. Again, just my opinion though!