There were quite a few well known hobbyists who were, and rather recently, chattering about how ADA substrates will break down over time. The talk was that the substrate would be "temporary" and would need to be changed out after a short time.
Well, seems to me they are being proven wrong. I have seen nothing but positive results from people using ADA Aquasoil. Beautiful plants being grown in stable aquariums. The results just don't lie. As more and more hobbyists are finally giving the product a chance, I think we are going to get more and more positive reviews, and the product is going to be proved to be a long lasting substrate, just as Jeff mentioned. First hand experiences are opening eyes and minds.
The only regret I have about the 37G aquarium I recently set up is that I did not use the ADA Aquasoil and Powersand. I should have done the Aquasoil and the Powersand. Jay Luto tried to persuade me. Instead, I chose the Onyx Sand with the thought of that ADA substrate chatter in the back of my mind. Well, the aquarium is still relatively new with no fish to deal with....maybe I'll swap out the substrate and replace it with Powersand and Aquasoil.
If anyone is thinking about the ADA substrates, give them a try. I know I am not speaking with first hand experience about the Aquasoil and the Powersand(but I may someday

), I have not been disappointed with the other ADA products I have tried.
Mike