My main goal in using perlite is not to hold nutrients (and thus, water) but to allow better and faster drainage. I also want my soil to be more open, and allow passage of air more readily. I simply believe that this is what's best for my tropical plants.
drdawg (Dr. Kenneth Ramsey)
The reason it's so hard to lose weight when you get up in age is because your body and your fat have become good friends.