Yeah I saw those medicine man tabs, I was thinking about ordering some but don't need so many. I was looking at these because they have them at my local Petsmart and they are cheaper than the flourish. This would be for a tank which has only inert gravel, so I am concerned about my crypts and aponogetons getting enough nutrients at their roots. I noticed the extra nitrogen, too, but I am not as concerned because the tank has a modest fish load and I don't dose any other N.