Ahh, but you see, there is the beauty of it all. They don't have to be. When the question is, "why are so many people on simply opposed to planted tanks" Then the data used becomes much more relevant. I am not trying to take a look at data on a global scale, rather the data on this forum. At this point in the discussion there has been established a lot of Con's to keeping a planted tank, and so far, the only justified Pro is "they look cool". Many of the Pro's we so often hear from the planted tank community have been shown to be misconceptions, myths and heresay.I would not say, however, that your posted results are the global "norm" simply because that data comes from a very small cross section of dicsus keepers here on this forum, specifically those that already have disease issues hence the reason for their post. Your reasoning is solid based on the data provided but cannot be considered empirical evidence based on the fact that you employ logical deduction vice verifiable data resulting from direct observation or experience. Conclusions are only as good as the data provided.